Muerte de Maintenance Man en Black Thunder (Thunder Basin Coal Company LLC), WY, 21 de julio de 2021

A Millwright drove the pins out of a 200-ton crane boom to change out a section and the boom fell on employee.

Texto original en inglés de la MSHA

On July 21, 2021, at approximately 11:45 a.m., Jeffrey Wendland, a 31 year-old millwright with over 13 years of experience, died when a crane boom struck him, while he was working under it. The victim removed the last pin from the bottom boom, causing the boom to fall, and pinning him underneath the steel cross brace. The fatality occurred because the mine operator did not: 1) make sure that the equipment was blocked against motion before performing work underneath the equipment, and 2) task train miners to properly change boom extensions.

1. The mine operator did not make sure that miners blocked the equipment against motion before performing work underneath the equipment.

   Acción correctiva: The mine operator modified the current written procedure to assure that miners block equipment against hazardous motion before performing work underneath the equipment. The mine operator trained all miners on the revised procedure.

2. The mine operator did not task train miners to properly change boom extensions.

   Acción correctiva: The mine operator developed new written procedures that incorporate job safety analysis and include a procedural check sheet to use prior to performing the task of changing the boom extensions on their cranes. The procedural check sheet includes reviewing and understanding the crane manufacturer’s manual. The mine operator trained all miners on these procedures.

Lee el informe completo (PDF)

Hallazgos del informe final de investigación de la MSHA, que sustituye la narrativa preliminar anterior.

Actividad al momento del incidente

Machine Maintenance

Subunidad / ubicación

STRIP, QUARY, OPEN PIT

Tipo de accidente

Golpeado por objeto que cae

Fuente de la lesión

CRANES,DERRICKS

Naturaleza de la lesión

CRUSHING

Parte del cuerpo afectada

MULTIPLE PARTS (MORE THAN ONE MAJOR)

Experiencia minera total

13 years

Experiencia en esta mina

13 years

Experiencia en este puesto

13 years

Grado de la lesión

FATALITY

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