GRASSFIGS is a mnemonic used in Principal Hazard Management Plans. What does the G stand for?

• A. Ground Strata Failure
• B. Roads or Vehicle Operating Areas
• C. Air Quality (Dust, Contaminants)
• D. Spontaneous Combustion

Answer: (A)

GRASSFIGS is used to remember the principal hazards to consider in a Principal Hazard Management Plan. The G stands for Ground Strata Failure, which means instability in the surrounding rock around underground workings—roof and rib falls, floor heave, or collapses caused by geology, mining-induced stresses, or water effects. This hazard is central to mine safety because a sudden failure can trap or injure workers and disrupt operations. Managing it involves a solid geotechnical assessment, appropriate ground support design (like rock bolts, mesh, and supports), regular inspections, monitoring of ground conditions, and clear contingency plans. The other letters in the mnemonic map to different hazards (such as road and vehicle areas, air quality, spontaneous combustion, etc.), which is why Ground Strata Failure is the correct interpretation for the G.