Strategies for encouraging miners to stay away from unsupported roof and perform self-protective actions /
I tiakina i:
| Kaituhi matua: | |
|---|---|
| Hōputu: | Tē mōhiotia |
| Reo: | Ingarihi |
| I whakaputaina: |
Pittsburgh, Pa. :
U.S. Dept. of the Interior, Bureau of Mines,
990.
|
| Rangatū: | Information circular (United States. Bureau of Mines) ;
9283. |
| Ngā marau: | |
| Tags: |
Tāpirihia he Tūtohu
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Matheson Library
| Tau karanga: |
VF 622.8 P483
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|---|---|
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Tārua
On Shelf
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