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• Trenching and excavating

1973

CIS 74-221 Excavation and trench work
Putten en sleuven [en holandés]
Description of measures to be taken to prevent the collapse of trench and excavation walls (angle of slope must be adapted to nature of soil, humidity, stresses in vicinity of trench, vibration present, etc.); shoring of trenchwork (with practical examples); relevant statutory provisions.
P no 25, Labour Inspectorate, Directorate General of Labour (Arbeidsinspectie, Directoraat-Generaal van de Arbeid), Postbus 69, Voorburg, Netherlands, 5th edition, 1973. 12p. Illus.