In the case Fullowka et al. v. Royal Oak Ventures Inc, held in the aftermath of an 18-month strike at Royal Oak Mines in Yellowknife, the CAW was originally held responsible for 22% of damages at trial, before CAW was successful on appeal. The trial judge found that the union breached its duty of care by doing nothing to stop illegal acts during the strike, paying fines and legal fees for striking miners, providing a person to assist the miners' union who prolonged the strike, and failing to bargain in good faith. At trial, the court ruled that the cumulative effect of these breaches of the duty of care were found to have materially contributed to Roger Warren's bombing of the mine, which killed nine strikebreaking workers. Warren, a union member who had been fired from Royal Oak, testified that he was only capable of the bombing because strike-breakers had been "dehumanized" by the union and was sentenced to life in prison. However, these findings of liability were overturned on appeal by the Northwest Territories Court of Appeal and a decision by the Supreme Court of Canada was dismissed. Furthermore, CAW members Al Shearing and Tim Bettger were sentenced to two and a half and three years in prison, respectively. Both were convicted of painting anti-scab graffiti and setting an explosion in a ventilation shaft on June 29, 1992. Bettger was sentenced to an additional six months in prison for blowing a hole in a television satellite dish September 1 of that year. (The unioned miners were part of the Canadian Association of Smelter and Allied Workers union (CASAW) Local 4 at the time of the strike, and merged into the CAW on May 1994.)