PDF-Surface mining ground control is covered in nine subsections within Pa
Severity Commodity
Lost time Coal 1807 23 1830 Metal 140 5 145 Nonmetal 15 0 15 Stone 14 9 23 Subtotal 1976 37 2013 lost time Coal 777 9 786 Metal 269 3 272 Nonmetal
Download Presentation
"Surface mining ground control is covered in nine subsections " is the property of its rightful owner. Permission is granted to download and print materials on this website for personal, non-commercial use only, provided you retain all copyright notices. By downloading content from our website, you accept the terms of this agreement.
Presentation Transcript
Transcript not available.