# Timbering in Underground Anthracite Mines (Part 1)

Mine Safety and Health Administration Timbering in Underground Anthracite Mines (Part 1) DVD589 (Was VC807) - 1994 ( Part 1 | Part 2 ) Timbering is the most common roof support method used in underground anthracite mines. The system of timbering is governed by the character of the top and bottom, thickness of the coal vein, pitch of the coal vein, life of the entry, haulage system, and the operator’s approved roof control plan. This videotape demonstrates the fundamentals and characteristics used in installing typical timber sets: single prop, post and bar (two-piece sets), and “double timber” (three-piece sets).

- Kind: Educational
- Year: 1994
- By: Mine Safety and Health Administration
- Genres: Education
- Archive: [Internet Archive](https://archive.org/details/gov.msha.dvd589.1)
- Licence or status: [Public domain (Creative Commons dedication)](http://creativecommons.org/licenses/publicdomain/) (as the archive states it)
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/gov.msha.dvd589.1?play=1)