Year: | 1960 |
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Document Type: | N/A |
Issuing Agency: | United States. Bureau of Mines. |
SUDOC: | I 28.6:51/960 |
Series: | Miners' circular (United States. Bureau of Mines) |
Subjects: | Mine safety -- United States. |
Mine accidents -- United States -- Statistics. | |
Mine accidents -- United States -- Prevention. | |
Link: | http://digital.library.unt.edu/ark:/67531/metadc40318/ |