The Dominion Coal Company insisted that the ventilation in the mine was in working order despite the many miners who claimed that it was not and that there had been gas built up in the mine. a coroner's inquiry began to investigate the cause of the explosion and found the Dominion Coal company was guilty of gross negligence. The Amalgamated Mine Workers of Nova Scotia charged the company with criminal negligence and three of their officials with manslaughter. The crown prosecutor in the case had previously defended the Dominion Company did not bring in any evidence against the company. The presiding judge on the case had also previously worked on behalf of the company and instructed the jury to find the defendants not guilty.