Trenching Trenching operations expose workers to cave-ins, falling materials, hazardous atmospheres, underground utilities, water accumulation, and mobile equipment. Because trenches have restricted working space and limited means of escape, hazards must...

Trenching and Shoring Trenching and shoring operations are common when installing buried utilities, pipelines, drainage systems, and other underground infrastructure. These operations can expose workers to cave-ins, falling materials, hazardous atmospheres,...

Excavations Cave-ins are one of the most serious hazards associated with excavation and trenching work. Other hazards include falling materials, underground utilities, hazardous atmospheres, water accumulation, mobile equipment, and falls into...

Excavations An excavation is any man-made cut, cavity, trench, or depression in the earth's surface formed by removing soil. Excavation work can expose employees to cave-ins, falling materials, hazardous atmospheres, underground...