A heavy-drinking construction worker from England known as Mr. Majors started coming to the Pam Pam Tavern at 491 Jean Talon West in October 1976 and spent much of his paycheque on the suds.
The man, who stood over six feet tall and weighed over 230 lbs, didn't drink any less after his wife left him during this time.
The 49-year-old father of at least one son, named Chris, walked in and sat alone at a table a few feet from the door at about 8 p.m. on the evening of Dec. 28, 1976.
His friend Bridgman came to sit with him but Majors told him he'd prefer to sit alone.
There were anywhere from eight to 15 people inside.
A drug dealer who sold dime bags of hashish from a table in the tavern went outside to confer with his supplier, as well as the barman who also got a cut of sales.
At that moment the construction worker finished his draft beer, and took out a small six volt battery and connected it to two wires stuck on his jacket.
The explosion was large.
"It just blew. The table flew out like missile. He was everywhere, in pieces, brains, blood you name it," a witness tells Coolopolis.
All patrons fled, leaving police with few to interview.
The bar reopened two weeks later and is still running under the same name Pam Pam Bar, one of the oldest bars in the Park Extension area.