The visitors actually had the chance to go in front in the opening minute when Dyron Daal scorned an opportunity after being put through by Michael Paton. The Steelmen then went straight up the park and Calum ELLIOT shot home giving Derek Soutar no chance.
Worse was to follow and six minutes later, Ross McCORMACK doubled their advantage before Darren SMITH added a third three minutes before the break. Sandy Clark rang the changes at the interval, bringing on Andy Bagshaw and Mark Thomas for Brian Neill and Neil McVitie.
However the alterations failed to change the pattern of the game and midway through the half, Adam COAKLEY struck twice in the space of six minutes to see Well go nap.
Aberdeen did manage a consolation with four minutes remaining when Chris MAGUIRE flighted home a well taken free kick.