:: rawblogXport ::
union news / workers rights / construction / safety / irony...
 |
|
| carpentersunionbc.com | |
|---|---|
| google news | |
recent posts: | |
| BlogRolling: | |
blogs that link here  
    
  implementation: email d@ve2300 this weblog is the work of dave livingston, a union carpenter in nelson bc canada 
| |
|
| |
| |
FAIR USE NOTICE: This site contains copyrighted material the use of which has not always been specifically authorized by the copyright owner. We are making such material available in our efforts to advance understanding of labor and economic issues, etc. We believe this constitutes a "fair use" of any such copyrighted material as provided for in section 107 of the US Copyright Law. In accordance with Title 17 Chapter 1 Sec.107, the material on this site is distributed without profit to those who have expressed a prior interest in receiving the included information for research and educational purposes. | |
 | |
|
"The fight is never about grapes or lettuce. It is always about people." Cesar Chavez | |
:: Tuesday, October 23, 2007 ::
Retreat mining: Study needed to address safety concerns - Editorial, Salt Lake Tribune
It's known as retreat mining, a dangerous method used to recover as much coal as possible from otherwise played-out mines. The coal that helps form the structural support system for the mine is removed, allowing the roof to collapse as the miners work their way back, or "retreat," toward the mine entrance.
For decades, retreat mining has been conducted with relative safety in the East, where miners plumb shallow coal seams with minimal overburden. But less is known about the practice in the West, where mining is conducted thousands of feet underground and the weight of the mountains bring incredible pressures to bear.------------------------------------------- posted 8:19 AM :: reference link ::
0 comments ::
Comments:
Post a Comment
