Creating workplaces where we all watch out for each other

Creating workplaces where we all watch out for each other

MSHA warns about dangers of unsupported trenches

Image of the trench

Photo: Mine Safety and Health Administration

Arlington, VA — Miners should avoid entering trenches with unsupported walls, the Mine Safety and Health Administration advises in a recent fatality alert.

The agency issued the alert in response to a Jan. 3 incident in which a miner was killed while trying to replace a 12-inch discharge line in an excavated trench. The trench wall collapsed, engulfing him.

MSHA best practices include:

  • Stay clear of potentially unstable areas.
  • Establish and discuss safe work procedures before starting work.
  • Identify and control all hazards associated with the work to be performed and the methods to properly protect workers.
  • Follow OSHA guidelines for trenching and excavation safety.

OSHA’s standard on trenching and excavation (1926.650, Subpart P) requires protective systems such as sloping, shoring and shielding for trenches that are 5 feet or deeper, unless the excavation occurs in stable rock.

“Trench collapses, or cave-ins, pose the greatest risk to workers’ lives,” OSHA says. “When done safely, trenching operations can reduce worker exposure to other potential hazards – including falls, falling loads and hazardous atmospheres – and incidents involving mobile equipment.”

The 10th annual Trench Safety Stand-Down is set to take place June 16-20.


McCraren Compliance offers many opportunities in safety training to help circumvent accidents. Please take a moment to visit our calendar of classes to see what we can do to help your safety measures from training to consulting.

Original article published by Safety+Health an NSC publication

Skip to content