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Port Credit in Mississauga in Peel Region, Ontario — Central Canada (North America)
 

St. Lawrence Starch

The factory and site

 
 
St. Lawrence Starch Marker image. Click for full size.
Photographed by Tim Boyd, September 26, 2024
1. St. Lawrence Starch Marker
Inscription.
St. Lawrence Starch purchased the factory site in 1889. Archie Hutchison bought 10 acres from the Cotton Estate that was located at the eastern end of the Village of Port Credit. John Gray supervised the construction of the original factory.

The complex consisted of the factory building and the adjoining boiler room with its two iron stacks. A third stack and boiler were added in 1892 along with a feed plant. St. Lawrence Starch expanded the steam plant and added the original glucose plant in 1905.

In 1907, the plant steam engines were upgraded and electricity was introduced to the factory building. Also in 1907, a carpenters' shop was added. St. Lawrence Starch produced its own electricity and drew fresh water directly from Lake Ontario, independent from the surrounding village.

In 1911, a new power plant and coal ash storage tank were built. At the same time, a new factory building was started. However, with the economic uncertainty created by the outbreak of World War I, a decision was made to halt construction of the partially completed building. During the war, local recruits of the Canadian Expeditionary Force camped in the nearby woodlot and bathed in the tubs in the new, but unused factory.

On July 4, 1918, the old wooden factory building was completely destroyed by fire. This
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could have been a disaster for the company, but the new factory building was brought into partial production by the end of the year. The company added a new table house and feed house in 1920.

By 1925, other improvements to the site included constructing a new water line, upgrading the plant machinery and changing the boilers in the power house. The St. Lawrence Starch Company office building was added in 1932.

The staff house was added in 1958 for the workers to use as a lunchroom and recreation facility. Environmental concerns led to the upgrading of the feed drying and process water treatment complex in 1971. An ethanol facility was added in 1976, producing alcohol for the wine and spirits industry. Manufacturing ceased in March 1990. The factory buildings were demolished in 1993 to make way for the current residential and parkland use.
 
Topics. This historical marker is listed in this topic list: Industry & Commerce. A significant historical year for this entry is 1889.
 
Location. 43° 33.229′ N, 79° 34.82′ W. Marker is in Mississauga, Ontario, in Peel Region. It is in Port Credit. It can be reached from Port Street East. The marker is in St. Lawrence Park, on the north side of the Waterfront Trail, approx. 100 metres west of the park access at St. Lawrence Drive. Touch for map. Marker is in this post office area: Mississauga ON L5G 4V2, Canada. Touch for directions.

Regionally, this marker is in Greater Toronto, specifically on the Golden Horseshoe, and in the Toronto Metropolitan Area. It is also in Central Canada. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once a British colony, the Viceroyalty of New France, the Haudenosaunee (Iroquois) Confederacy, and Rupert’s Land.

Other nearby markers. At least 8 other
St. Lawrence Starch, the factory and site marker (centre) image. Click for full size.
Photographed by Tim Boyd, September 26, 2024
2. St. Lawrence Starch, the factory and site marker (centre)
markers are within walking distance of this marker: A different marker also named St. Lawrence Starch (here, next to this marker); a different marker also named St. Lawrence Starch (here, next to this marker); a different marker also named St. Lawrence Starch (a few steps from this marker); Mrs. Mailman (approx. 0.4 kilometers away); At the Mouth of the Credit (approx. 0.4 kilometers away); The Mississauga Tract, 1805 (approx. 0.4 kilometers away); The Mills of the Credit River (approx. half a kilometer away); The Harbour (approx. half a kilometer away). Touch for a list and map of all markers in Mississauga.
 
St. Lawrence Starch marker detail image. Click for full size.
Photographed by Tim Boyd, September 26, 2024
3. St. Lawrence Starch marker detail
The plant in 1990
St. Lawrence Starch Company, 1935 image. Click for full size.
4. St. Lawrence Starch Company, 1935
Source: Heritage Mississauga (public domain)
 
 
Credits. This page was last revised on October 27, 2024. It was originally submitted on October 18, 2024, by Tim Boyd of Hamilton, Ontario. This page has been viewed 168 times since then and 19 times this year. Photos:   1, 2, 3, 4. submitted on October 18, 2024, by Tim Boyd of Hamilton, Ontario. • Andrew Ruppenstein was the editor who published this page.
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Jun. 5, 2026