Reuters – Teck Resources Ltd has withdrawn an application to build its C$20.6 billion ($15.7 billion) Frontier oil sands mine in Alberta, d ays before the federal government was to decide on whether to approve a project opposed by environmentalists and indigenous groups. “The growing debate around this issue has placed Frontier and our company squarely at the nexus of much broader issues that need to be resolved,” Lindsay wrote in his letter. “In that context, it is now evident that there is no constructive path forward for the project.”