Le Faso reported that the general manager of the underground zinc mine, Hein Frey, has been given a 24-month suspended sentence, and the director of a subcontracting company Byrnecut Burkina, Daryl Christensen, received a 12-month suspended sentence.
The country director of Nantou Mining, Ditil Moussa Palenfo was quoted to say that the mine will be allowed to continue to operate.
"We are on the edge, I would say, a little relieved to know that the court does not prevent us from continuing to operate because it would have been a different disaster after losing our colleagues than to also lose our jobs," he said.
"So the judgement, I can say overall, was a good decision," he said.
Trading of the firm's shares has been suspended since 22 August after the company filed for projection under the Companies' Creditors Arrangement Act.
The suspension is to continue until 3 October at which point it is to delist from the Toronto Stock Exchange.
Along with its 90%-owned Perkoa mine, Trevali's assets include the 90%-owned Rosh Pinah Mine in Namibia, and the wholly-owned Caribou Mine in northern New Brunswick, Canada.
The company also owns the Halfmile and Stratmat Properties and the Restigouche deposit in New Brunswick. It also owns an affective 44% interest in the Gergarub project in Namibia.
The Perkoa mine - located in the Sanguie province, about 120 kilometres west of Ouagadougou - has a 2,000 tonne per day milling operations. It has been in commercial operation since 2013.