By Ashley Joannou -CP-Officials in Yukon say they believe about 19 million litres of cyanide-contaminated water leaked from a containment pond at the site of a mining disaster last year before the problem was spotted and the water diluted. Erin Dowd, director of technical services for the Mines Ministry, told a technical briefing Tuesday that there is no timeline for when the pond at the Eagle Gold mine site north of Whitehorse could be repaired. She said crews on the ground have to wait for the pond to be drained and ice removed before any repairs can happen, and in the meantime the receiver in charge of managing the site has begun constructing an interception system in the area to collect groundwater, should that be necessary. “There’s a strong incentive…