Why Roof Control Plans

Year Published: 1981

Format: 16mm

Sound: sound

Description: Shows that the collapse of roofs and ribs in coal mines can be prevented by following an approved roof-control plan. Explains basic plans, provides examples and describes the implementation of a plan. Describes types of roof support, areas covered, types of rock strata, mining equipment and materials, roof-bolting machines and support timbers.

No holdings listed.

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