SEYNE-LES-ALPES, France — Just over a week after a Germanwings plane crashed into the French Alps, investigators have finished retrieving human remains from the crash site and are now trying to match them with DNA profiles from the 150 people killed — an arduous task that could leave families waiting for months. The extraordinary recovery process mobilized hundreds of people and cut a stony road into a forested Alpine mountainside to help the team bring back anything they found, from a body part to a tiny shred of skin. Based on black box cockpit recordings recovered the day of the crash, investigators believe the Germanwings co-pilot, Andreas Lubitz, locked the captain out of the cockpit and deliberately slammed the plane into the mountain, killing everyone on board. The impact of the March 24 crash shattered the plane and all those inside, ripped a black box from its orange protective casing, and left shreds of metal and cloth scattered across hundreds of meters yards. A special unit of mountain troops, with help from German investigators, is now clearing the crash site of everything else that is there — including debris and personal effects.