Trenching and elevated work: highs and lows of construction hazards.
D000056:Accident Prevention; D000058:Accidental Falls / Q000517:prevention & control*; D000062:Accidents, Occupational / Q000517:prevention & control*; D003252:Construction Materials; D004869:Equipment Safety; D006801:Humans; D011482:Protective Devices; D012987:Soil
D012987:Soil