Mining and quarrying - 6 entradas encontradas
Sus criterios de búsqueda son
- País / Organización: Estados Unidos
- Mining and quarrying
Mine Safety and Health Administration (MSHA), Department of Labor
Mineral resources - Code of Federal Regulations, Title 30, Parts 1 to 199 (Revised as of July 1, 1989) [USA]
Compilation of federal regulations relating to mine safety. Contents: testing, evaluation, and approval of mining products (mining equipment, safety equipment) by the MSHA; administrative requirements; safety education and training of miners; notification, investigation and recording of accidents, injuries and illnesses affecting miners; safety and health standards in metal and nonmetal mines (ground control; fire prevention and control; air quality and physical agents; explosives; drilling and rotary jet piercing; loading, hauling and dumping; aerial tramways; travelways; electricity; compressed air and boilers; machinery and equipment; personal protection; materials storage and handling; illumination; safety programmes; personnel hoisting; welfare facilities); coal mine safety and health; penalties.
Superintendent of Documents, US Government Printing Office, Washington DC 20402, USA, 1989. ix, 749p. Illus. Index.
U.S. Department of Labor, Mine Safety and Health Administration
Wire rope standards
These final rules (effective date 24 Jan. 1984) revise existing safety standards for the selection, use, examination and retirement of wire ropes used at coal, metal and non-metal mines. They apply to ropes used to hoist persons in shafts and slopes at all underground mines and at incline hoists in surface mines. Existing standards are clarified and updated to reflect current mining practices and state-of-the-art technology. Record-keping and paperwork requirements are reduced where possible, and alternative methods of compliance are specified.
Federal Register, 30 Code of Federal Regulations Parts 55, 56, 57, 75 and 77, 25 Nov. 1983, Vol.48, No.228, p.53228-53242.
Department of Labor, Mine Safety and Health Administration
Mine rescue teams: minimum requirements.
Regulations (effective 11 July 1981) under the Mine Safety and Health Act 1977. Operators of underground mines must have at least 2 mine rescue teams available at each underground mine. Cooperative agreements and contractual arrangements are permitted, and alternative plans may be submitted for mine rescue capability for small and remote mines, and for special mining conditions. Provisions concerning: mine rescue stations; equipment and maintenance requirements at each station (12 self-contained oxygen breathing apparatus; portable supply of liquid oxygen, liquid air, oxygen pumps, cap lamps, gas detectors); physical criteria and physical requirements for mine rescue team members (medical records); training (instructors, training records); emergency notification plan and mine map.
Federal Register, 30 Code of Federal Regulations Part 49. Vol.45, No.135, 11 July 1980, p.46992-47005.
Federal Mine Safety and Health Act of 1977 [USA]
Contents of this law, originally passed in 1969 and amended in 1977: definitions; general aspects (mandatory safety and health standards, advisory committees, inspections, enforcement and other legal aspects); interim mandatory health and safety standards (dust standard and respiratory equipment, medical examinations, noise standards, roof support, ventilation, combustible materials and rock dusting, electrical equipment, trailing cables, grounding, underground electrical distribution, trolley wires, fire protection, coal mine maps, blasting and explosives, hoisting and mantrips); black lung benefits; miscellaneous.
Superintendent of Documents, US Government Printing Office, Washington DC 20402, USA, 1977. 88p.
Amendment to 30 CFR Parts 55 - Health and safety standards: metal and nonmetallic open pit mines; 56 - Health and safety standards: sand, gravel and crushed stone operations; and 57 - Health and safety standards: metal and nonmetallic underground mines.
These amendments, dated 2 Aug. 1974, became effective on 7 Aug. 1974. The standards are revised to prescribe that no employee shall be permitted an exposure to noise in excess of 90dBA for 8h a day, 92dBA:6h, 95dBA:4h, 97dBA:3h, 100dBA:2h, 102dBA:1h30min, 105dBA:1h, 110dBA:30min, 115dBA:15min or less. No exposure to exceed 115dBA. Impact or impulsive noise not to exceed 140dBA peak sound pressure level. When the daily noise exposure is composed of two or more periods of noise exposure at different levels, their combined effect shall be considered rather than the individual effect of each.
Federal Register, Code of Federal Regulations, Title 30, Chapter 1. Bureau of Mines, Department of the Interior, Washington, D.C. Washington, D.C., USA, 7 Aug. 1974, Vol.39, no.153, p.28433-28434.
Code of Federal Regulations, Title 30, Chapter 1. Bureau of Mines, Department of the Interior, Washington, D.C.
Miscellaneous amendments to 30 CFR Parts 55 - Health and safety standards: Metal and nonmetallic open pit mines; 56 - Health and safety standards: Sand, gravel and crushed stone operations; and 57 - Health and safety standards: Metal and nonmetallic underground mines.
These amendments, dated 26 june 1974, became effective on 1 July 1974. They prescribe that exposure to airborne contaminants must not exceed the TLVs adopted by the ACGIH, and that the 8-h time-weighted average airborne concentration of asbestos dust to which workers are exposed must not exceed 5 fibres >5µm in length per ml, as determined by the membrane filter method. Control of employee exposure must be preferably by prevention of contamination, removal by exhaust ventilation or by dilution with uncontaminated air. Other provisions concern respirators, blasting agents, avoidance of spark or flame in repairing premise used for storage of explosives, coupling of oxygen hoses to jet-piercing drills, electrical equipment, prevention of over-travel of man hoists, etc.
Federal Register, 1 july 1974, Vol.39, No.127, p.24316-24320.