North American Energy Partners Inc. (Canadian Corporation)

NACG Finance LLC (Delaware Limited Liability Company)
North American Construction Group Inc. (Canadian Corporation)

North American Caisson Ltd. (Alberta Corporation) Including the division North American Micropile
North American Construction Ltd. (Canadian Corporation)
North American Engineering Inc. (Alberta Corporation)
North American Enterprises Ltd. (Alberta Corporation)
North American Industries Inc. (Alberta Corporation)
North American Maintenance Ltd. (Alberta Corporation)
North American Mining Inc. (Alberta Corporation)
North American Pipeline Inc. (Alberta Corporation)
North American Road Inc. (Alberta Corporation)
North American Site Development Ltd. (Alberta Corporation)
North American Site Services Inc. (Alberta Corporation)
North American Pile Driving Inc. (Alberta Corporation)
Noramac Ventures Inc. (Joint Ventures)
Drillco Foundation Co. Ltd.