Tests of strength of roof supports used in anthracite mines of Pennsylvania /
| Data(s) |
26/02/2025
|
|---|---|
| Resumo |
"Report of the United States Bureau of Mines to the Pennsylvania State Anthracite Mine Cave Commission and review of the compressive strength of anthracite, bituminous coals and mine supports." Mode of access: Internet. |
| Formato |
bib |
| Identificador | |
| Idioma(s) |
eng |
| Publicador |
Washington : Dept. of Commerce, Bureau of Mines : Govt. Print. Off. [distributed], |
| Direitos |
Items in this record are available as Public Domain, Google-digitized. View access and use profile at http://www.hathitrust.org/access_use#pd-google. Please see individual items for rights and use statements. |
| Palavras-Chave | #Materials #Mine roof control. #Coal mines and mining |
| Tipo |
text |
