The General Engineering Company of Ontario (GECO, pronounced: "Gee-ko") was a munitions plant located in Scarborough, Toronto, and owned by the Government of Canada. Between July 1941 to July 1945, GECO filled more than 256 million units of ammunition for the Government of Canada. GECO is named after its builder and operator, General Engineering Company (Canada) Limited. The Scarborough GECO munitions plant was also known as "Project No. 24", and "Scarboro". It spanned 172 buildings. Following the Second World War, some of the buildings were used for emergency housing.