MAPLETON, Ill. (WMBD) — A 39-year-old man died while working at the Caterpillar Mapleton Foundry on Thursday.

Peoria County Coroner Jamie Harwood said the man, identified as Steven Dierkes, 39, was working near a crucible when he accidentally fell in and died instantly.

A crucible is a container used to melt metal into a liquid by way of extremely high temperatures.

Caterpillar’s Media Relations and Public Affairs department released the following statement:

We are deeply saddened by the death of an employee who was involved in a serious incident at our Mapleton, Illinois, facility on June 2. Our thoughts are with this employee’s family, friends and colleagues. The safety of our employees, contractors and visitors is our top priority.

This is the second death to occur at the Mapleton found in the last seven months. In December, a man died after falling from a “significant height.”