Manufacturer catalog
Expro Chemical Products was the Quebec energetic-materials manufacturer behind the Valleyfield plant lineage that later became Expro TEC and then General Dynamics OTS Canada Valleyfield, with sourced ties to C-4, Composition B, RDX/cyclonite, nitrocellulose, and military propellant production.
2 weaponsExpro Chemical Products sits in the long Valleyfield industrial lineage that began with wartime explosives production at the Defence Industries Limited complex. Quebec heritage records say the site became Valleyfield Chemical Products in 1978, Expro Chemical Products in 1982, Expro TEC in 2001, and part of General Dynamics OTS in 2007.
The company occupied a specific place in North American energetic-materials supply rather than a broad finished-weapon portfolio. GAO identified Expro Chemical Products as a Canadian producer of C-4, a Canadian authorized-explosives list placed Composition B and Composition C-4 under Expro / Produits Chimiques Expro at Valleyfield, and a National Academies reference described Expro as a Valleyfield producer of improved military rifle propellants.
GAO materials identify Expro Chemical Products as a Canadian producer of C-4, and the Canadian authorized-explosives list places Composition C-4 under Expro / Produits Chimiques Expro at Valleyfield.
Sources: GAO C-4 explosive report, Canadian Authorized Explosives List
A Canadian authorized-explosives list places Composition B under Expro / Produits Chimiques Expro, while a Canadian defence patent states that Composition B used in its examples was obtained from Expro Chemical Products.
Sources: Canadian Authorized Explosives List, Insensitive melt cast explosive compositions patentThe Quebec heritage record says the Defence Industries Limited complex was built in 1940-1941 for wartime explosives production at Salaberry-de-Valleyfield.
Sources: Quebec heritage entry
The Quebec heritage record says the former DIL site was sold in 1978 and renamed Valleyfield Chemical Products Inc. under Space Research Co.
Sources: Quebec heritage entry
The Quebec heritage record says the site was resold in 1982 and became Expro Chemical Products Inc.
Sources: Quebec heritage entry
Canada's Technology Partnerships Canada annual report says Expro Chemical Products of St-Timothée developed a process that adapted military hand-grenade technology for next-generation automotive airbags.
Sources: TPC annual report 1998-1999
A National Academies report on black and smokeless powders described Expro Chemical Products at Valleyfield as a North American producer of improved military rifle propellants previously manufactured by DuPont.
Sources: National Academies black and smokeless powders
The Quebec heritage record says the company became Expro TEC in 2001 after SCN Technologies acquired it.
Sources: Quebec heritage entry
The Quebec heritage record says General Dynamics OTS acquired EXPRO TEC in 2007, carrying the Valleyfield energetic-materials line forward under a new corporate owner.
Sources: Quebec heritage entry, GD-OTS Canada about us
Public sources often describe the Valleyfield operation under later Expro TEC and General Dynamics OTS names. Expro Chemical Products is retained for the 1982-2001 company name and for sources that name Expro directly.
Category
Standalone missiles, bombs, rockets, torpedoes, and guided or unguided explosive payloads.
