MARKETS

MSHA warns of shuttle car shock hazard

THE US Mine Safety and Health Administration warned mines this week of a shock hazard discovered ...

Donna Schmidt

The rollers, which are exposed on some brands of units and are meant to prevent trailing cable from coming into contact with the machine frame, are normally located between the car's sheave wheel carrier and the cable reel housing/spooling device.

The roller portion is isolated electrically, separated from the frame by bearing assemblies, MSHA noted, so most rollers are not made from or covered with a flame-resistant insulating material.

“If an exposed conductor, in a damaged section of an energised cable, comes into contact with this roller, the roller will become energized,” MSHA said.

“Since the roller is readily accessible and shuttle car operators routinely clean the area around the roller, if the roller becomes energised, miners could become exposed to a shock hazard."

The agency noted that not all units are equipped with this metal roller, but mines should contact the shuttle car's original equipment manufacturer for an MSHA-accepted trailing cable roller replacement.

In the meantime, OEMs have been made aware of the issue as well as MSHA's revision of policy on cable reels. Those wishing to view or print the amendments to Program Policy Manual Volume II, Section 18.45 can do so at http://www.msha.gov/regs/complian/ppls/2007/PPL07-V-4.asp.

TOPICS:

A growing series of reports, each focused on a key discussion point for the mining sector, brought to you by the Mining Monthly Intelligence team.

A growing series of reports, each focused on a key discussion point for the mining sector, brought to you by the Mining Monthly Intelligence team.

editions

ESG Mining Company Index: Benchmarking the Future of Sustainable Mining

The ESG Mining Company Index report provides an in-depth evaluation of ESG performance of 61 of the world's largest mining companies. Using a robust framework, it assesses each company across 9 meticulously weighted indicators within 6 essential pillars.

editions

Mining Magazine Intelligence Exploration Report 2024 (feat. Opaxe data)

A comprehensive review of exploration trends and technologies, highlighting the best intercepts and discoveries and the latest initial resource estimates.

editions

Mining Magazine Intelligence Future Fleets Report 2024

The report paints a picture of the equipment landscape and includes detailed profiles of mines that are employing these fleets

editions

Mining Magazine Intelligence Digitalisation Report 2023

An in-depth review of operations that use digitalisation technology to drive improvements across all areas of mining production