Although police and forensic teams have left the site of Wednesday death at the Carmeuse Lime & Stone quarry in Flamborough, the Ontario Ministry of Labour has a stop order on the scene, leaving parts of the quarry idle Thursday.

Ministry spokesperson Bruce Skeaff said the ministry imposed a do not disturb order on the scene of yesterday's death, which Hamilton police said was a 29-year-old welder. 

The MOL said the worker was a contract employee working on the Carmeuse site for Rassaun Steel. 

Police and Rassaun did not return calls Thursday. However, the MOL said Rassaun was contracted in to do "patch repairs" on a coal bin.

"How this worker was involved, I don't know," said Skeaff.

Carmeuse spokesperson Kathy Wiley said she's not aware of any other deaths on any of the three Canadian sites they operate. The Belgian-owned multinational has 250 employees in Canada.

South of the border, Carmeuse has some 1,800 employees over 22 sites, as well as operations in Europe and South Africa. Carmeuse is a privately held company, and declined to disclose revenues.

Wiley said this was not the first accidental death the company has had, although she could not say exactly how many deaths have happened on Carmeuse work sites. 

In 2008, Tony Allen Cruse, 45, was killed after a Carmeuse-owned Ellijay Mine in north Georgia collapsed when Cruse was two miles deep. His body was recovered seven-and-a-half hours after the initial collapse. 

In 2011, the U.S. Department of Labour (DOL) found Carmeuse "not-chargeable" in the death of a 51-year-old contract maintenance worker, who collapsed near the top of a cooling tower at their Grand River mine. The DOL determined he died of natural causes and that he died of a "myocardial infarction" (heart attack) and that he had a history of hypertension. Although an autopsy was never performed, the coroner and the investigator determined that the heat was "not considered to be a contributing factor."