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1985

CIS 85-1405 Kaiser I., Guntermann A., Hielen F.
Transport of persons by belt conveyors
Personenbeförderung auf Gurtförderern [en alemán]
The "Recommendations relating to installations of belt conveyors used for the transport of persons", formulated by mine research institutes and published by the Steinkohlenbergbauverein (Essen, Federal Republic of Germany, 1985), serve as a basis for a review of various important points, including posture during transport, design of access points (embarking and disembarking) and dimensions of free passage. Included are belt conveyors with an inclination to the level of up to 20gon and with speeds of up to 2.5m/sec.
Glückauf, 11 Apr. 1985, Vol.121, No.7, p.520-527. Illus. 5 ref.

CIS 85-1104 Pearey J.T.
Precautions against frictional ignitions associated with coal cutting and tunnelling
Aspects covered in this study of the explosion hazards created by heat and sparks produced by coal cutting equipment: historical; description of frictional ignition situations (geological parameters, mine gases); precautions against ignition risk (geological assessment, heading and face design, ventilation, equipment cooling, spark suppression); present and future research.
Mining Engineer, Apr. 1985, Vol.144, No.283, p.517-522. Illus. 18 ref.

CIS 85-1102 Castable construction materials
Hydraulisch abbindende Baustoffe [en alemán]
This issue contains the complete text of papers presented at a conference on the use of castable materials for supporting mineworkings. Subjects covered: ground control by projection filling; present-day techniques of stowing; hydraulic stowing in explosive driving; complete stowing when using boom-type driving machines; hydraulic stowing with pneumatic transport of construction materials; stowing with light porous mortar; use of "Bullflex" support pipes in driving; complete pneumatic stowing of a shaft; present-day projection techniques; wet concrete conveyed pneumatically; joint use of roof bolts and projected concrete; use of steel-fibre reinforced concrete; lining of drill holes with colloidal cement; lining of large-cross-section drill holes with mortar projected by centrifugation.
Glückauf, 1985, Vol.121, No.2, p.85-163. Illus. Bibl.

CIS 85-639 Corn M., Breysse P., Hall T., Chen G., Risby T., Swift D.L.
A critique of MSHA procedures for determination of permissible respirable coal mine dust containing free silica
A review of the US Mine Safety and Health Administration (MSHA) respirable mine dust control policy indicates that the recommended 2.0L/min sampling flow rate does not conform with published results indicating that a 1.4 to 1.7 L/min flow rate should be used in order to simulate existing pulmonary particle deposition models. The problems related to the determination of free crystalline silica in the samples are discussed and recommendations for the adoption of other standards are presented.
American Industrial Hygiene Association Journal, Jan. 1985, Vol.46, No.1, p.4-8. 20 ref.

CIS 85-808 Cichowski E.
Model of potential hazards in coal mines
Modell der im Steinkohlenbergbau auftretenden Gefährdungen [en alemán]
Presentation of a mathematical model whose purpose is the prediction of accident and disease rates in Polish coal mines, and of the preventive measures to be taken on the basis of the model. Distinction is made between static, kinetic and dynamic evolutionary phases; safety measures corresponding to each phase are described. Evaluation of the static risk of occupational diseases (due to noise, vibration or toxic gases); comparison of accident risks and health risks due to different concentrations of carbon monoxide in air; evolution of fire risks and preventive measures in the various phases.
Glückauf-Forschungshefte, 1985, Vol.46, No.1, p.39-45. Illus. 15 ref.

1984

CIS 93-1484 Connelly D.J., Forte J.V.
Safety tips for underground coal mining
Training brochure on safe working practices in underground coal mining. Descriptions of typical accidents, with corresponding safety tips.
National Mine Health and Safety Academy, P.O. Box 1166, Beckley, WV 25802, USA, 1984. 35p. Illus.

CIS 93-1501 Misaqi F.L.
Heat stress in mining
Contents of this training manual: effects of heat stress on the body; how the body copes with heat stress; control of heat stress in mining; heat disorders and first aid to heat stress victims. Glossary of terms.
National Mine Health and Safety Academy, P.O. Box 1166, Beckley, WV 25802, USA, 1984. 32p. Illus. 7 ref.

CIS 90-22
Ministério do Trabalho e Segurança Social
Regulation on protection and radiological safety in mines and in mineral treatment and uranium recovery plants [Portugal]
Regulamento de protecção e segurança radiológica nas minas e anexos de tratamento de minério e de recuperação de uránio [en portugués]
Regulatory Decree No.78/84 covers the following topics: definitions and technical summary; scope of the regulation; general obligations of employers and workers; radiation exposure limits; administrative organisation of radiological protection; radiological monitoring; protection of installations; personal protection; penalties.
Serviço de Informação Científica e Técnica, Praça de Londres, 2 - 1°, Lisboa, Portugal, 1985. 45p.

CIS 89-1901 Seminar on coal mining safety
Presentations from the Seminar on Coal Mining Safety held 20-23 Nov. 1984 in Beijing, People's Republic of China, under the sponsorship of the Ministry of the Coal Industry, the Ministry of Labour and Personnel and the ILO. Each paper is printed in English and in Chinese. Topics: prevention of and protection against outbursts of coal and gas; monitoring of the underground environment; air cooling; safety training; fire prevention and extinction.
International Labour Office, 1211 Genève 22, Switzerland, no date. 103 + 292p. Illus.

CIS 89-430
USSR Commission for UNEP
Nickel and its compounds
Chemical safety information sheet. Exposure limit (USSR): MAC (nickel carbonyl) = 0.0005mg/m³; MAC (nickel salts as hydroaerosols) = 0.005mg Ni/m³; MAC (nickel metal, oxides, sulphides, ore concentrates) = 0.05mg Ni/m³. Toxicity: the water-soluble salts and nickel carbonyl are the most toxic (irritation of mucous membranes and skin, dermatitis, skin absorption; pulmonary oedema from exposure to nickel carbonyl); dust from nickel ore production is carcinogenic in man.
Centre for International Projects, GKNT, Moskva, USSR, 1984. 36p. 82 ref.

CIS 87-670 Saltykov L.D., Šalaev I.L., Lebedev Ju.A.
Radiation protection in geological exploration and uranium mining
Radiacionnaja bezopasnost' pri razvedke i dobyče uranovyh rud [en ruso]
This guide provides information on radioactive properties of uranium ore and radiation hazards, standards, methods and means of radiation protection, organisation and execution of radiation monitoring, methods and equipment for dosimetry.
Izdatel'stvo Ėnergoatomizdat, šljuzovaja nab.10, 113114 Moskva, USSR, 1984. 144p. Illus. 130 ref. Price: Rbl.0.60.

CIS 86-2028
(Direktoratet for arbeidstilsynet)
Raise drilling lifts with pin or rack guiderail
Stigortheiser med pinne- eller tannstanggeider [en noruego]
These regulations, dated 4 April 1973 and amended on 13 September 1984 (effective 1 Sept. 1973), concern the requirements to be met by the design and construction of these lifts and contain the safety rules to be observed during their use: general rules; design rules (drive unit, stop and lowering brakes, safety catches, guide rollers, guiderail, cage, work platform, signalling system, marking); operating manual; rules for safe use; emergency winch. A check list, an example of operating instructions, and the requirements to be met by the electrical equipment are appended.
Postboks 8103 Dep., 0032 Oslo 1, Norway, Oct. 1984. 15p. Illus.

CIS 86-971 Kunihara T.
Results of an investigation with respect to priority and frequency of subjective symptoms of vibratory hazard patients
The patients were ex-miners having been engaged in excavation at a metal mine, who were later assigned to less physically demanding surface work, and all of them had been engaged in their new assignments for more than 10 years. Almost all patients complained of pain in the elbow, shoulder, neck and waist. As for other subjective symptoms, they did not necessarily complain all the time and the painfulness was not serious. Of the subjective symptoms reported on questionnaires, there were many which had no need for specific medical treatment.
Journal of the Medical Research Society for the Mining and Smelting Industries, June 1984, No.24, Annual Report, p.62-67. Illus. 14 ref.

CIS 86-978 Iohel'son Z.M., Kravčenko A.V., Gar'kovec A.M.
Mains-powered illumination of the coal face in narrow seams
Sredstva setevogo osveščenija dlja očistnyh zaboev na tonkih plastah [en ruso]
Description of a highly explosion-proof lighting system for use in the mechanised mining of narrow seams of coal. A stabilised direct-current power supply feeds a series of converters spaced along the seam. The power supply includes circuitry for protection against short circuits and ground faults. The converters provide power at 8V and 20-44kHz to fluorescent bulbs mounted on the roof supports. Each converter can supply 10 bulbs. The system provides 5lx at the working face as required by standards, with a spacing between bulbs of no more than 3m.
Ugol' Ukrainy, Nov. 1984, No.11, p.36. Illus. 1 ref.

CIS 86-907 Sen'ko V.F., Kuznecov B.A., Mačugovskij N.B., Krasik Ja. L.
Spark safety of an electrical circuit for battery-powered miners' lamps
Iskrobezopasnost' ėlektričeskoj cepi šahtnogo akkumuljatornogo svetil'nika [en ruso]
To avoid ignition of flammable gases in the air of mines by sparks from damaged wires, safety circuitry must disconnect the battery in less than the time required for ignition (15-120µs). The schematic diagramme of a transistorised circuit that operates in 3-5µs is presented.
Ugol' Ukrainy, Dec. 1984, No.12, p.34-35. Illus.

CIS 86-944 Bondarenko A.D.
APU dust control units for dust control in preparatory workings
Pyleulavlivajuščie agregaty APU dlja zaboev podgotovitel'nyh vyrabotok [en ruso]
Announcement of the APU-265 and APU-425 dust control units, developed by a group of research, engineering and production organisations in the USSR. They are designed for use in coal mine preparatory workings with cross-sections up to 20m². They include fans, dust collectors, noise control features, water supply systems and frames with skids; they differ in the arrangement of the components. They contain fabric filter elements as well as water sprays, which permits the collection of hard-to-wet dusts and allows the units to be used in cases where the use of water in the workings is contraindicated (e.g., unstable ground). The ducting of the units makes them useful for the redistribution of air supplied to the workings by the ventilation system. The units can reduce the dust concentration in air to 10-15mg/m³. Drawings, photographs and operating characteristics of the units are presented.
Ugol' Ukrainy, Dec. 1984, No.12, p.30-33. Illus.

CIS 86-806
(Gosudarstvennyj komitet SSSR po standartam)
Mineral processing [enrichment] equipment - General safety requirements
Oborudovanie obogatitel'noe - Obščie trebovanija bezopasnosti [en ruso]
This standard (effective 1 Jan. 1986) lays down safety requirements for ore and coal enrichment equipment (except laboratory equipment) and contains: general provisions; safety requirements with regard to machine elements; electrical safety; requirements for limitation of noise, vibration, dust and harmful substances; fitting the machinery and equipment with integral safety devices; verification of compliance. Sound energy levels of different types of mineral processing equipment are appended.
Izdatel'stvo standartov, Novopresnenskij per.3, 123840 Moskva, USSR, 1985. 14p. Price: Rbl.0.05.

CIS 86-647 Kuželová M., Kovařík J., Šmelhausová E., Šalandová J.
X-ray findings on the cervical spine of workers using vibrating tools
Rentgenové nálezy na krční páteři u pracujících s vibračními nástroji [en checo]
Of 261 workers suspected of occupational vibration damage, 174 stone-cutters and 53 forest workers who for most of their working hours were exposed to vibration were selected and examined. Comparison of the findings with those for controls showed that vibration does not contribute to the development of pathological cervical changes. Of the 261 workers examined, 118 showed occupational ilness due to vibration. Stone-cutters suffered from vasoneurosis (52%), joint disorders of the upper limbs (46%), and sporadic damage to nerves (2%). Forest workers were mostly affected by vasoneurosis (77%).
Pracovní lékařství, Sep. 1984, Vol.36, No.8, p.299-303. 15 ref.

CIS 86-747 Icsó J., Szöllösová M.
Incidence of lung cancer in iron ore miners
Výskyt plúcnej rakoviny u baníkov železorudných baní [en eslovaco]
Newly notified lung cancers in the years 1965-79 (384 cases) in the area around Rožňava (Czechoslovakia) differed between demographic groups. The incidence per 1000 persons for the population as a whole was 4.61; for men over 20 years, 12.96; for magnesite mine workers, 21.31. Of the 2 iron ore mines in the studied area, the incidence at one was 87.88 and at the second 10.27. The causative agent could have been radiation (radon) or some other component of the mine atmosphere, or some non-occupational factors such as smoking. The difference in the incidence between the 2 mines cannot as yet be explained.
Pracovní lékařství, Sep. 1984, Vol.36, No.8, p.294-298. Illus. 28 ref.

CIS 86-646 Janisch R.
Effect of smoking on occupational hearing loss
Vliv kouření na profesionální nedoslýchavost [en checo]
In a group of 1289 miners working as breakers, an adverse hearing effect of smoking was observed at regular preventive ear, nose and throat examinations. The correlation between years of smoking and hearing loss was a logarithmic function for decibel decrease at 1000, 2000 and 3000Hz, a divided radical function for decibel decreases at 4000Hz, and a linear function for total percent hearing loss calculated according to Fowler.
Pracovní lékařství, Nov. 1984, Vol.36, No.10, p.381-384. Illus. 18 ref.

CIS 86-305 Bersenev V.S., Marusov Ju.N.
Gripping device for lifting large stones
Gruzozahvatnoe ustrojstvo dlja krupnyh kamnej [en ruso]
Description and illustration of a gripping device to be hung from the hook of a crane. It consists of 2 jaws, 2 links and a ring that slides in a slot in one of the links; the crane hook engages the ring. The jaws are joined by the links in such a way that, when the jaws are placed around the load and lifting force is applied, one jaw exerts a twisting force on the load that tips it onto the other jaw. As designed and tested by the Leningrad Mining Institute, the gripper can lift loads of 15 tons with diameters of 1-2m that are embedded in the ground up to 20-30% of their height.
Promyšlennyj transport, Nov. 1984, No.11, p.13. Illus.

CIS 86-365 Tománek R., Sedlmajerová D.
Biological evaluation of noise aggressivity and our criteria for preventive hearing protection
Biologické hodnocení agresivity hluku a naše kritéria preventivní ochrany sluchu [en checo]
On the basis of audiometric tests of miners, methods for the biological evaluation of noise aggressivity and criteria for dispensary treatment and job transfer were verified in a 2-year comparative study. The results confirmed the merit of audiometric monitoring, especially at 4000Hz. Regression plots of hearing loss as a function of age or length of service are sensitive indicators of early hearing damage.
Pracovní lékařství, 1984, Vol.36, No.2, p.45-49. Illus. 20 ref.

CIS 86-347 Suvorova K.O., Karamzin V.P., Glotova K.V.
Clinical and x-ray characteristics of anthracosilicosis in exposure to coal dust at various stages of metamorphosis
Kliniko-rentgenologičeskie osobennosti antrakosilikoza pri vozdejstvii ugol'noj pyli raznyh stadij metamorfizma [en ruso]
Medical examination and chest x-rays of 622 coal miners and 265 victims of anthracosilicosis showed that the disease occurred more often in cases of exposure to anthracite dust than in exposure to coking or long-flame coals. The anthracosilicosis developing on exposure to anthracite was more severe than that due to coals at earlier stages of metamorphosis: it appeared earlier, was often nodular and aggravated by focal pulmonary tuberculosis and tended to be progressive.
Gigiena truda i professional'nye zabolevanija, Dec. 1984, No.12, p.10-13. 4 ref.

CIS 86-166 Saharova L.N., Syrovadko O.N., Manžosova G.B.
Assessment of the local effects and skin absorption of dinitronaphthalene
K ocenke mestnogo i kožno-rezorbtivnogo dejstvija dinitronaftalina [en ruso]
Dinitronaphthalene is widely used in mining (in explosives) and in the dyestuff industry (as an intermediate in the synthesis of aniline dyes), and can be present as airborne dust at concentrations as high as 30mg/m³. Although the compound irritated the conjunctiva of the eye in rabbits, it produced no other local effects and was absorbed by guinea pig skin at a rate of only 0.0014mg/cm²h. Maximum skin contamination of dinitronaphthalene production workers was 0.48mg/dm² (shift-average concentration on the hands). The estimated total skin contamination is equivalent to 0.18mg/kg; since the penetration rate measured in animals gives a maximum potential dose of 1.9mg/kg, and the LD₅₀ for the compound is on the order of 6000mg/kg, skin contamination by dinitronaphthalene is not a health hazard.
Gigiena truda i professional'nye zabolevanija, June 1984, No.6, p.23-26. 7 ref.

CIS 86-33 Lihačev L.Ja.
Dust suppression by aerosol turbulisation
Pylepodavlenie na osnove ėffekta turbulizacii aėrozolej [en ruso]
Theoretical considerations show that the efficiency of a liquid spray in capturing aerosol particles will be enhanced by increasing the turbulence of the aerosol. This can be achieved by pulsing the spray. One such system used with a coal cutter-loader reduced dust levels to 4mg/m³, whereas normal spray heads allowed levels of 28mg/m³ and higher. A hydroacoustic nozzle that uses the force of the water spray to generate sound waves has also been developed. This nozzle can be placed in a sound-deadening enclosure with fans, baffles and vibrating screens to clean air in ventilation systems. One such system can remove 99.6% of the dust in a stream with an initial concentration of 6-8g/m³ at a throughput of 5m³/s and a water consumption of 0.12L/m³.
Ugol', Aug. 1984, No.8, p.42-44. Illus.

CIS 86-45 Balan G.M., Šumov A.G.
Assessment of total vibration load and some medical and biological factors for prediction of the risk of vibration disease in miners
Ocenka summarnoj vibronagruzki i nekotoryh mediko-biologičeskih faktorov pri prognozirovanii srokov razvitija vibracionnoj bolezni u gornorabočih [en ruso]
The state of health of 1,280 miners subject to local vibration, cold and wet hands and static stress was determined by anamnesis and medical examination. Factors associated with early development of vibration disease were the age of beginning work (up to 20 and after 38), a deep-chested physique, injuries or frostbite of the fingers. To define total vibration load to miners for the whole length of service, a method of calculation of the relative vibration load coefficient (based on the correlation between actual and permissible time of work with vibrating equipment for a work shift) was elaborated. Assessment of total vibration load together with medical, biological and industrial risk factors enables prediction of the development of vibration disease in miners and timely preventive measures including rational assignment of miners to jobs.
Gigiena truda i professional'nye zabolevanija, Oct. 1984, No.10, p.13-16. 9 ref.

CIS 86-61 Babkov S.V., Železnjak O.S.
Calculation of the axial intensity of the light of mine signal lights
Rasčet osevoj sily sveta šahtnyh svetosignal'nyh priborov [en ruso]
The effectiveness of signal lights in mines is limited by the presence of airborne dust, poor backgrounds and bright sources of area and task lighting. The axial intensities were measured for switch-position indicators, traffic signals, mine car tail-lights and mine locomotive warning lights; the measured intensities were compared with values calculated on the basis of mine conditions and normative requirements. The intensity of the traffic signals was not great enough to permit interpretation of the signals by mine locomotive drivers at more than 30-40m; the design of the signals should be improved.
Svetotehnika, 1984, No.3, p.6-7. 6 ref.

CIS 85-2093 Real Decreto núm. 3255 por el que se aprueba el Estatuto del Minero
This decree, proclaimed on 21 Dec. 1983, contains provisions related to the conditions of work of Spanish miners (hiring, working hours, overtime, exposure time limits, rest periods); social rights (training, social security, prevention of occupational hazards).
Boletín Oficial del Estado, 4 jan. 1985, No.3, p.152-157.

CIS 85-2090 Uranium Mines (Ontario) Occupational health and safety regulations, 7 June 1984
Règlement sur la santé et la sécurité au travail dans les mines d'uranium de l'Ontario [en francés]
The regulations provide for the general health and safety of employees at uranium mining facilities in Ontario and adopt by reference the laws of Ontario in respect of this matter.
Canada Gazette - Gazette du Canada, 27 June 1984, Part II, Vol.118, No.13, p.2704-2708.

CIS 85-2015 Barreiros D., Fernandes Passos A.
Study of safety conditions in quarries
Estudo das condições de segurança em pedreiras [en portugués]
A survey of safety risks and their prevention in Brazilian quarries. Operations considered: drilling; blasting; loading and transportation.
Revista brasileira de saúde ocupacional, Apr.-June 1984, Vol.12, No.46, p.40-48. Illus. 13 ref.

CIS 85-1885 Ames R.G., Reger R.B., Hall D.S.
Chronic respiratory effects of exposure to diesel emissions in coal mines
Changes in respiratory function and development of chronic respiratory symptoms were measured over a 5-year period (1977-1982) in 280 US miners exposed to diesel engine exhaust gases and fumes. 838 non-exposed miners were used as controls. Spirometry and questionnaires on symptoms, occupational history and smoking habits were used to collect data. No relation between exposure to diesel emissions and chronic respiratory disorders could be established.
Archives of Environmental Health, Nov.-Dec. 1984, Vol.39, No.6, p.389-394. 29 ref.

CIS 85-1559 Sahnovskij L.A.
Control of airborne dust in the use of vibratory ore convehyors and self-propelled loaders
Obespylivanie vozduha pri vibrovypuske rudy i ėkspluatacii samohodnyh pogruzočno-dostavočnyh mašin [en ruso]
Intensification of underground ore extraction by the use of vibratory conveyors in the workings has resulted in an increase in airborne dust concentrations to 25mg/m³ at air flow rates of 0.5m/s. The efficiency of dust-control components of the ventilation system can be increased by increasing air speeds and by generating water mists in the vicinity of vibratory equipment. A pneumatic ejector for mist generation was developed; it has a throughput of 20.2m³/s at 1700Pa. Generation of a mist with a density of 8-10mg/m³ in conjunction with an air speed of 2m/s reduced dust to safe levels in galleries up to 35m long. Where diesel-powered self-propelled loaders were used, mist generation and an increase in air speed to 1m/s reduced dust to safe levels in galleries up to 55-60m long.
Gornyj žurnal, May 1984, No.5, p.54-56. Illus. 8 ref.

CIS 85-1697 Kyriazi N., Shubilla J.P.
Performance comparison of oxygen self-rescuers
Various oxygen self-rescuers from the USA and other countries were tested on a breathing and metabolic simulator in a laboratory. Parameters monitored during the test were inhaled levels of CO₂ and oxygen, inhaled gas temperature and breathing resistance. Also tested were apparatus service life, averages and peaks of monitored parameters and subjective comments.
US Department of the Interior, Bureau of Mines, 4800 Forbes Ave., Pittsburgh PA 15213, USA, 1984. 28p. Illus.

CIS 85-1709 Fourth Tripartite Technical Meeting for Mines Other than Coal Mines - Report III: Workers' health in mines other than coal mines. With special reference to the effects of the working environment and technological changes
4e réunion technique tripartite pour les mines autres que les mines de charbon - Rapport III: La santé des travailleurs dans les mines autres que les mines de charbon et, tout particulièrement, les effets du milieu de travail et des changements technologiques [en francés]
Aspects covered: I. Effects of technological developments on the working environment: extraction techniques, changes in mining technology, mechanisation, automation, computerisation, ergonomics; II. Health hazards (dust, noise and vibration, ionising radiation, chemical agents, microclimate, infectious and parasitic agents, lighting, psycho-social factors) and preventive measures; III. Occupational diseases, morbidity, absenteeism; IV. Health protection, medical supervision. International cooperation, ILO activity. In the appendix: Convention No.155, Recommendation No.164. The introduction and the main points of discussion of the meeting are available in Spanish.
International Labour Office, 1211 Genève 22, Switzerland, 1984. 61p. Price: SF.15.00.

CIS 85-1534 Buhtojarov V.F.
Increasing electrical safety in the use of flexible excavator cables
Povyšenie urovnija ėlektrobezopasnosti pri ėkspluatacii gibkih ėkskavatornyh kabelej [en ruso]
26.4% of all high-voltage electrical accidents in excavations during the period 1969-1981 involved cables. The most common cause of injury from current or arcing was erroneous supply of power to a disconnected but ungrounded cable. Injuries occurred most often during the disconnection and reconnection of cables during normal operation of equipment. (Percentages of other causes and circumstances are listed.) 70% of the injuries were attributable to failure to use safety devices (insulating gloves, portable grounding systems, voltage detectors, etc.). The safety situation can be improved by: assuring the supply and use of safety equipment; using plug-type connectors instead of junction boxes; introducing improved shielded cables and circuit breakers.
Ugol', Apr. 1984, No.4, p.51-52.

CIS 85-1708 Ihno S.A., Zalesskij P.S., Kosenko A.F.
Operation of mobile compressor sets in mines
Ėkspluatacija rudničnyh peredvižnyh kompressornyh stancij [en ruso]
A temperature limiting device (DTR-3M) has been developed to prevent excessive temperatures and the ignition of oil and soot in mobile compressor sets operating under abnormal conditions in underground mines. The principle is based on the opening of contacts of sensing devices when the temperature exceeds 110°C, which results in switching off the electric motor. One such device monitors the throttle valve to prevent overheating of the oil and air mixture and the body of the compressor, and another one the pressure line to double the action of the temperature-sensing element.
Bezopasnost' truda v promyšlennosti, Mar. 1984, No.3, p.39-40.

CIS 85-1768 Lablache-Combier B., Ley F.X.
Use of continuous electrocardiographic monitoring in the evaluation of work load in a hot mining environment
Utilisation de l'enregistrement continu dans l'évaluation de la charge de travail des chantiers miniers chauds [en francés]
Study of the slow-down of the heart rate due to heat in 22 workers of a potash mine. Description of the technique used in continuous electro-cardiographic monitoring; difficulties. Increase in the heart rate is related either to the work load or to heat load. Influence of these 2 factors on the heart rate and on blood pressure. The evaluation of the work load produced by a task is based on peaks in the acceleration of the heart rate as related to the basic heart rate during the work shift, and on the incidence of premature heart beats.
Archives des maladies professionnelles, 1984, Vol.45, No.5, p.323-332. Illus. 14 ref.

CIS 85-1514 Iohel'son Z.M., Kotikov A.P., Mačugovskij N.B.
Explosion-proofing illuminated indicators for mines
Osobennosti vzryvozaščity rudničnyh svetosignal'nyh ustrojstv [en ruso]
A review of illuminated indicators used in mine electrical equipment, discussing the hazards presented by defective indicators and the measures to be taken to explosion-proof the devices that include illuminated indicators (the temperature of hot components of the indicator should not exceed safe levels in either normal or defective operation; the current in the indicator circuitry should not create a spark hazard; the indicator should be enclosed in a transparent cover strong enough to withstand an impact of at least 4J; all conductors which may pose a spark hazard must be enclosed in the explosion-proof housing; all parts intended to be explosion-proof must be made of heat-resistant materials).
Svetotehnika, 1984, No.7, p.14-15.

CIS 85-1707 Statistics of accidents for 1982 in coal mines and in other establishments supervised by the Belgian Mines Administration
Statistique des accidents survenus au cours de 1982 dans les mines de houille et dans les autres établissements surveillés par l'Administration des Mines [en francés]
Statistics of accidents in coal mines, other underground and open-cast mines and quarries, iron and steel plants and explosives factories connected to these mines. Included are: introduction; underground and surface accidents; frequency, severity and hazard ratings underground and at the surface; accident reports prepared by the Mines Administration; trends in fatal accidents; breakdown of serious accidents by location and type of injury.
Annales des mines de Belgique - Annalen der Mijnen van België, 1984, No.3-4, p.131-155.

CIS 85-1408 The seven hazards of blasting
The principal dangers in blasting and ways of avoiding them are discussed after a brief review of accident statistics. The dangerous events or practices are: misfires; buring charges; drilling into bootlegs; abuse of explosives; electrical storms; fumes and dust; loose, hanging and fly rock.
World Mining Equipment, Nov. 1984, Vol.8, No.11, p.15-18. Illus.

CIS 85-1253 Del Campo J.M., Granda J.R., Pereiro E., Martinez C., Vega C., Bandres P., Mosquera J.A.
Cutters and drillers: two different kinds of coalworkers' pneumoconiosis?
Foreurs et abatteurs: deux pneumoconioses différentes du charbon? [en francés]
Radiographs of 393 coal-cutter operators and 187 drillers were read independently by 2 experts according to the ILO classification scheme. The 2 groups were similar in age distribution, smoking habit, alcohol consumption and respiratory disease incidence, but the FEV was significantly lower among drillers. Sall opacities of type p and category 1 were predominant among cutters; among the drillers, opacities of type q and r and category 3 were more frequent, and there were more pseudo-tumoral masses and signs of distention. Because of these quantitative and qualitative differences, 2 types of pneumoconiosis should be established. The one affecting cutters should be considered as coalworkers' pneumoconiosis in the strict sense of the term, while the one affecting drillers should be considered as the more acute and invalidating mixed-dust silicosis. This differentiation should be taken into account during epidemiologic evaluations.
Revue des maladies respiratoires, 1984, Vol.1, No.5, p.305-307. 14 ref.

CIS 85-1360 Dechoux J., Pivoteau C., Wantz J.M., Pepelnjak C.
Small irregular radiological anomalies of the lung observed in coalminers of the Lorraine region (France)
Les petites anomalies radiologiques pulmonaires irrégulières observées chez les mineurs de charbon lorrains [en francés]
Research into the frequency of irregular opacities in miners. Among the radiologic anomalies (RX) of the lung more or less typical of pneumoconiosis, observed in 1044 miners (Lorraine, France), there were 976 cases of typical pneumoconiosis (154 cases of massive progressive fibrosis and 890 pictures of small round opacities), as well as 68 cases of small irregular opacities (types s, t and u of the ILO International Classification). These forms of small irregular opacities were associated with obstructive spirographic ventilatory disorders and with a decrease in steady-state CO transfer to a larger extent than were clasic round opacities. Among those affected, the average age was higher and tobacco smoking more marked, but long exposure to conditions giving rise to pneumoconiosis (26.9 years on average) must also be taken into consideration when interpreting the markedly high frequency of these observations, radiologically different from the "classic" pneumoconiosis of Lorraine coal miners.
Revue de pneumologie clinique, 1984, Vol.40, p.91-97. 21 ref.

CIS 85-1406 Liégeois R., Mairesse M.
Transport of personnel in mines
Le transport du personnel dans la mine [en francés]
Exhaustive review of the various methods of transporting personnel in mines: on foot or by mechanised or semi-mechanised vehicles.
Annales des mines de Belgique - Annalen der Mijnen van België, Sep.-Oct. 1984, No.9-10, p.363-378. Illus.

CIS 85-1404 Menjajlo N.I., Tyšlek E.G.
Evaluation of the heaviness of miners' work as a function of the geological conditions in mines of the Donets Coal Basin
Ocenka tjažesti truda gornorabočih v zavisimosti ot gornogeologičeskih uslovij šaht Donbassa [en ruso]
Four categories of heaviness of work in mining are defined by their allowable energy expenditures: I (≤2kcal/min), II (2-4kcal/min), III (4-7kcal/min) and IV (≥7kcal/min). Data collected in the field made possible the construction of a nomogram that relates the height of the workings, the angle of the working face and the rate of advance to the category of heaviness.
Gigiena truda i professional'nye zabolevanija, Jan. 1984, No.1, p.41-42. Illus.

CIS 85-1240 Mogilevskij L.M., Gladyr' V.V.
Filters for dry dust collectors for use with mining machines
Filtr dlja sistem suhogo ulavlivanija pyli, obrazujuščejsja pri rabote gornyh mašin [en ruso]
Description of compact dust collectors (filter area 0.1-0.2m²) that can be attached to dust-generating machines (e.g., cutter-loaders). The collectors contain a filter element of vinyl plastic foam. Air is drawn through the foam by the suction of a compressed air ejector. The filter removes >99% of the dust from the air passing through it, and can hold 400-450g/m². It can be cleaned by back-flushing with compressed air or by washing with water. Throughput is 6m³/min for a 0.1m² filter and 12m³/min for a 0.2m² filter. The noise level 1m from the filter is 82dB(A).
Gornyj žurnal, Feb. 1984, No.2, p.59-61. Illus. 4 ref.

CIS 85-953 Kádas I., Szende B., Csikós A., Szendröi M.
Extrapulmonary localisation of carbon and silica particles in anthracosilicosis
Silicon and aluminium ions were detected by x-ray microanalysis in the cytoplasmic deposits of Kupffer cells in the liver of an old retired coalminer with severe pneumoconiosis, showing evidence that inhaled particles can be deposited in the liver.
Medicina del lavoro, Sep.-Oct. 1984, Vol.75, No.5, p.404-406. Illus. 4 ref.

CIS 85-1103 Sahbi N.
Maintenance of hydraulic props in a phosphate mine. Ergonomic and organisational problems
La maintenance des étançons hydrauliques dans une mine de phosphate. Problèmes d'ergonomie et d'organisation [en francés]
This thesis is based on a study of Tunisian phosphate mines: research methodology and basic data; "anatomopathologic" inventory of props used; ergonomic analysis of maintenance circuits and of work in the mine. The data allow a systematic analysis of the reasons for and of the consequences of changes in the props. Ergonomic and organisational recommendations are given. The situation in European mines is described by way of comparison. The text submitted for the preliminary examination for a Diploma in Ergonomics includes the report on an anthropometric research project in connection with the research.
Laboratoire de physiologie du travail et d'ergonomie du CNAM, 41 rue Gay-Lussac, 75005 Paris, France, 1984. 185p. Illus. Bibl.

CIS 85-1101 Secondary breaking of rock in quarries
This data sheet covers the hazards of breaking large rocks produced by primary blasting misfires or improper shot patterns. Breaking techniques described are the safe use of the drop ball and jackhammer drilling of blast holes.
National Safety Council, 444 North Michigan Ave., Chicago, IL 60611, USA, Rev. 1984. 5p. Illus. Bibl.

CIS 85-776 Màgliaro A., Iannaccone S., Màgliaro N.
Cardiac and respiratory pathology of occupational origin in sulfur workers
La patologia cardiaca e respiratoria di origine professionale nei lavoratori dello zolfo [en italiano]
Spirometric tests and electrocardiograms were performed on 200 present and past employees of a sulfur mine (length of employment: 5-30 years). Significant reductions in vital capacity (average 30%), in FEV₁ (25-30%), increases in relative residual volume (29% in miners 39-45 years old, 57% in miners over 66 years old) and in residual volume/total lung capacity relation (by 36-43%, depending on age) were found. Significant changes in heart function occurred in 20% of the subjects (disturbances of atrial-ventricular conduction and of conduction in blood vessels on the right side of the body). Hypotheses for the aetiology of these changes are given.
Rivista di medicina del lavoro ed igiene industriale, Apr.-June 1984, Vol.8, No.2, p.109-117. 8 ref.

CIS 85-813 Non-metal mineral products in Quebec - a sector monograph
Produits minéraux non métalliques au Québec - monographie sectorielle [en francés]
Contents of this detailed study: socioeconomic characteristics (history, enterprises, manpower, social institutions); safety and health hazards (statistics, compensation, rehabilitation, hazards associated with the industry); organisation of prevention (general and specific measures, associations, research, legislation).
Commission de la santé et de la sécurité du travail du Québec, 1119 rue de Bleury, Montréal, Québec H3B 3J1, Canada, 1984. 317p. Bibl.

CIS 85-647 Hanke W., Sepulveda M.J., Watson A., Jankovic J.
Respiratory morbidity in wollastonite workers
Medical tests (chest radiography, spirometry and a questionnaire) and environmental surveys (respirable and total dust concentrations in personal breathing samples) were conducted in a wollastonite mine and mill on 108 workers, in 1976 and 1982, as well as on 86 controls working in an electronic plant. Chronic respiratory symptoms were affected by smoking, but no relation to wollastonite exposure was found. Pneumoconiosis was found in 3 of the exposed workers, with no progression between 1976 and 1982. Long-term exposure to wollastonite was significantly related to declines in pulmonary function, particularly in the FEV₁/FVC ratio and the peak flow rate. Within the exposed group, those with exposure to higher dust concentrations were more severely affected.
British Journal of Industrial Medicine, Nov.1984, Vol.41, No.4, p.474-479. 24 ref.

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