Miners' views about why people go under unsupported roof and how to stop them /
by Robert H. Peters and Robert F. Randolph.

APA Citation

Peters, R. H., Randolph, R. F., United States. Bureau of Mines. (1991). Miners' views about why people go under unsupported roof and how to stop them. Washington, D.C.: United States, Department of the Interior, Bureau of Mines.

MLA Citation

Peters, Robert H, Robert F Randolph, and United States. Bureau of Mines. Miners' Views About Why People Go Under Unsupported Roof And How to Stop Them. Washington, D.C.: United States, Department of the Interior, Bureau of Mines, 1991.