Testimony of John L. Lewis before the special Subcommittee on Mine Safety of the Committee on Labor and Public Welfare, United States Senate, Washington, D.C., January 29, 30, 1952, and before the Subcommittee on Mine Safety Legislation of the Committee on Education and Labor, United States House of Representatives, Washington, D.C., February 21, 1952., by United States Senate Committee on Labor and Public Welfare et al.

Title:	Testimony of John L. Lewis before the special Subcommittee on Mine Safety of the Committee on Labor and Public Welfare, United States Senate, Washington, D.C., January 29, 30, 1952, and before the Subcommittee on Mine Safety Legislation of the Committee on Education and Labor, United States House of Representatives, Washington, D.C., February 21, 1952.
Author:	United States. Congress. Senate. Committee on Labor and Public Welfare
Author:	Lewis, John L. (John Llewellyn), 1880-1969
Author:	United States. Congress. House. Committee on Education and Labor
Note:	Labor's Non-partisan League, 1952

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Subject:	Coal mine accidents
Subject:	Coal mines and mining -- Safety measures
Subject:	Coal mines and mining -- United States
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