Hogg's Hollow Disaster National Historic Event
Historic Sites and Monuments Act (R.S.C., 1985, c. H-4)
1960 to 1960
Hogg's Hollow Disaster
Research Report Number:
Raised sensitivity and galvanized public attention to the broad problem of workplace safety and immigrant exploitation in the construction industry
On 17 March 1960, workers installing a water main under the Don River at Hogg’s Hollow became trapped by fire and an explosion. Pasquale Allegrezza, Giovanni Carriglio, Giovanni Fusillo, and Alessandro and Guido Mantella died. A brutal combination of carbon monoxide poisoning and drowning in silt and water took their lives. In response, Italian-Canadian workers demanded safer working conditions and an end to the exploitation of immigrant labourers. A series of strikes led to a royal commission investigating construction industry practices, contributing to improvements to labour legislation in Ontario.