Home > Term: close timbering
close timbering
The setting of timber sets and lagging very close together when shaft sinking or tunneling through very loose ground or crushed coal in thick seams.
- Besedna vrsta: noun
- Industrija/področje: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
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- ed.young
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(Milwaukee, United States)
