 |
|
Subject: Заколообразование по скреперному квершлагу? mining. Заколообразование по скреперному квершлагу?Cutter break (balmstone) formation in the scraper crosscut? |
| Flaws in the scraper cross-drift. |
| To gel: thanks a lot! |
| You need to be logged in to post in the forum |