14
Rock mechanics /geomechanics symposium. Seattle:
Washington.
Training and Retraining of Miners. (2015). 30 CFR
Part 48. www.ecfr.gov/current/title-30/chapter-I/
subchapter-H/part-48.
Training and Retraining of Miners Engaged in Shell
Dredging or Employed at Sand, Gravel, Surface
Stone, Surface Clay, Colloidal Phosphate, or Surface
Limestone Mines. (2015). 30 CFR Part 46. www.ecfr
.gov/ current/title-30/chapter-I/subchapter-H/part-46
Whitson, A. and Kocher, L. (2020). Steps to Ladder Safety.
National Institute for Occupational Safety and Health
(NIOSH). Retrieved from www.cdc.gov/niosh/mining
/UserFiles/works/StepsToLadderSafety_508.pdf.
Rock mechanics /geomechanics symposium. Seattle:
Washington.
Training and Retraining of Miners. (2015). 30 CFR
Part 48. www.ecfr.gov/current/title-30/chapter-I/
subchapter-H/part-48.
Training and Retraining of Miners Engaged in Shell
Dredging or Employed at Sand, Gravel, Surface
Stone, Surface Clay, Colloidal Phosphate, or Surface
Limestone Mines. (2015). 30 CFR Part 46. www.ecfr
.gov/ current/title-30/chapter-I/subchapter-H/part-46
Whitson, A. and Kocher, L. (2020). Steps to Ladder Safety.
National Institute for Occupational Safety and Health
(NIOSH). Retrieved from www.cdc.gov/niosh/mining
/UserFiles/works/StepsToLadderSafety_508.pdf.