McIntyre Mines

Its iconic headframe, located near downtown Timmins, has come to represent the entire Porcupine Gold Rush.

There has been an extensive degree of rehabilitation and exploration work performed in and around the old McIntyre Mine property in recent years, and the Porcupine Joint Venture has yet to decide whether or not to continue spending hundreds of millions of dollars on mining out the property or continuing with a closure plan (2007).

The shaft, along with new shops, processing, administrative and change facilities were all located on the north shore of Pearl Lake.

This led to the subsequent abandonment and demolition of the original mill located to the south west of the new facilities.

The project used 240,000 pounds of powder to blast the rock and 2,256,000 feet (688,000 m) of Douglas fir to timber the shaft.

Mine manager Dick Ennis told how he ran to the bank with hot bullion bars to cover a payroll and how he disappeared underground to hide from creditors.

In later years the large profits from the mine enabled J. P. Bickell to loan the funds to Conn Smythe for the construction of Maple Leaf Gardens in Toronto.

A McIntyre research group, which included the world-renowned Banting Institute of the University of Toronto, pursued the goal of finding a way of eliminating or reducing the solubility of silica particles by using small quantities of metallic aluminum dust in a two-stage dry that miners passed when they returned to surface.

[4] In 2024, a study found that workers exposed to McIntrye Powder had "modestly elevated rates" of cardiovascular disease.