Author: | Adams, William W. |
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Year: | 1921 |
Document Type: | N/A |
SUDOC: | I 28.7:275 |
Series: | United States Bureau of Mines Reports |
Report Number: | Technical Paper 275 |
Subjects: | Mine accidents -- United States. |
Quarries and quarrying -- United States. | |
Link: | https://digital.library.unt.edu/ark:/67531/metadc66445/ |