Two separate federal agencies announced Tuesday that they will be launching investigations into Shell’s Arctic drilling operations. Coast Guard Rear Admiral Thomas Ostebo said his agency would be conducting a full marine casualty investigation into the recent grounding of the Kulluk, looking for answers to questions about why the rig was being moved, and why the tug towing it lost power, among other things.

In a separate move, Interior Secretary Ken Salazar said he had asked Tommy Boudreau, the head of the Bureau of Ocean Energy Management to do a full review of Shell’s Arctic operations this summer -- including its various mishaps in Unalaska.

The timelines for the Coast Guard investigation is at least four months. Salazar asked for the Interior Department’s review to wrap up in just two months.

Hear more about the reviews and Shell's reaction on APRN's website.