27/10/2022
Not a very common risk in West Aust but there have been several incidents of unexpected gas intersects in the WA mining industry resulting in equipment damage. However, it is detailed in the state Code of Practise for exploration drilling in section 22.http://www.dmp.wa.gov.au/Documents/Safety/MSH_COP_MineralExplorationDrilling.pdf
Some links to state guidance and incidents local and overseas.
US EPA 2013. Case study - Methane recovery at non-coal mines:https://www.epa.gov/sites/default/files/2016-03/documents/cmop-noncoal_flyer.pdf
DMP 1999. Significant incident report 102:http://www.dmp.wa.gov.au/Documents/Safety/MSH_SIR_102.pdf
NRC US 1984. Emergency and Continuous Exposure Limits for Selected Airborne Contaminants. National Research Council (US) Committee on Toxicology. Washington (DC): National Academies Press (US); 1984.: https://www.ncbi.nlm.nih.gov/books/NBK208284/
DCEP WA 2005. Mines safety bulletin 74. Explosive gases associated with mining:https://www.dmp.wa.gov.au/Documents/Safety/MSH_SB_074.pdf
Herbert A. Pierce, Gregory J. Walsh, Robert C. Burruss, and James R. Degnan 2007. US Geological Survey. Borehole characterization of a methane-yielding bedrock well, Massachusetts. Retrieved on 14th April 2022 from:https://pubs.usgs.gov/of/2007/1399/ofr2007-1399.pdf
DMP 1997. Significant incident report 85. do websearch
Gov WA 2022(A). Mines Safety and Inspection Act 1994. Retrieved on 14th April from: https://www.legislation.wa.gov.au/legislation/statutes.nsf/law_a515.html
Gov WA 2022(B). Mines Safety and Inspection Regulations 1995: https://www.legislation.wa.gov.au/legislation/statutes.nsf/law_s4641.html
Fred N. Kissell, Ph.D 2006, CDC - Handbook for Methane Control in Mining:https://www.cdc.gov/niosh/mining/userfiles/works/pdfs/2006-127.pdf
U.S. Geological Survey2021. Igneous and metamorphic-rock aquifers: https://www.usgs.gov/mission-areas/water-resources/science/igneous-and-metamorphic-rock-aquifers