BS-1421 › Complete Document History
Specification for picks, beater picks and mattocks
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1995 EDITION - REAFFIRMED IN 2011 - June 15, 1995
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Obsolete Revision Information: |
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AMD 1313 - AMENDMENT 2 FOR 1947 EDITION - Feb. 15, 1974
PD 865 - AMENDMENT 1 FOR 1947 EDITION - Dec. 15, 1948 1947 EDITION - WITHDRAWN, 6/15/1995 - Dec. 18, 1947 |