From the looks of it, an outfit incorporated in April 1977 under the name of E.S. Mantis Research was based in North Vancouver, British Columbia. Its founder was one Elmo Sitnam. It allegedly had 20 or so employees around 1983-85.
Sitnam was seemingly born in Trinidad around 1919. He moved to England and seemingly trained as a civil engineer. Sitnam moved to Canada around 1963. He and his family lived in Montreal (Quebec) and Sarnia (Ontario) before a final move to Vancouver, around 1973.
In the late 80s and / or early 90s, E.S. Mantis Research cooperated with a provincial organisation, British Columbia Research Corporation (BCRC) of Vancouver, to develop an avalanche control projectile it had designed. That project went nowhere as a result of the explosion of a projectile in a snow gun, in April 1991, at Whistler Mountain, which killed a ski patroller and slightly injured two others.
A coroner's inquiry concluded in January 1992 that the gun was not to blame, a faulty projectile was.
A 1991 U.S. patent for that projectile can be found at
https://patents.google.com/patent/CA2015773A1/en?inventor=Elmo+Sitnam
In the course of the inquiry, it became known that Sitnam, then aged 72, was not a PhD in Aeronautical engineering with a great deal of experience in explosives and rocketry, nonexistent qualifications he had used to obtain the assistance of various people and organisations, including the National Research Council of Canada, which provided him with funding. Sitnam admitted he did not have a PhD but claimed that he had two diplomas from British engineering institutes, including an outfit called BIET, possibly the British Institute of Engineering Technology.
In any event, the coroner's report pointed out that "Sitnam's knowledge of explosives was lacking and he conducted some extremely dangerous modifications to the charges and fuses. Many of the safety features found on a standard projectile had been removed or altered on the prototype. The handling, storage and transportations of projectiles were haphazard at best"
It has been suggested that, given that Canada's Charter of Rights and Freedom protected him from self-incrimination at the inquiry, Sitnam walked away scot-free, even though the inquiry put the blame for the explosion very much on him.
Sitnam appeared to be an inventor with a solar collector (U.S. patent dated 1981) and a pair of biodegradable diapers (1993 and 1994) under his belt. In 1992, he was working on an "aerodynamic grenade" and "something called a Black Widow anti-matter tank."