Retrieve the Venture Co.'s Engineering Plans from the lumber mill in Windshear Crag.
This is it, [player]. Pay close attention. The devices are done, and ready to be used.
Take these pages--they'll explain more about the detonators and explosives, and where you should place them.
Remember, the success of your mission doesn't depend on how much destruction you cause. Plan Alpha's success depends on you bringing back the Venture Co.'s engineering plans from inside the lumber mill south of Cragpool Lake.