AFL.com.au revealed Mohr's re-signing at the end of May and with Plowman also putting pen to paper, the fledgling team has now locked down more than 80 per cent of its playing list beyond the end of this year.
GWS general football manager Graeme Allan said the signings of Mohr andPlowman showed their faith in the club.
“Lachie Plowman hasshown a lot of promise in his first 11 games for the club and Tim Mohrhas become one of our most important players as a key defender,” saidAllan.
“Their decision to commit to the Giants is a strong endorsementof the club.
"They see the Giants as a place they want to be and believein the direction of the club.
Mohr was recruited by the Giants as a mature-age VFL recruit at the end of 2011, having just won the Casey Scorpions' best and fairest award.
He made an immediate impact in the Giants' debut season, 2012, playing 13 of their first 14 games before groin soreness derailed his year.
Last season, he established himself as a key member in the Giants' defence, playing every game and manning some of the competition's best power forwards
Plowman, 19, was the No. 3 pick in the 2012 NAB AFL Draftand has played 11 games since his debut in at the start of 2013. He has played five games this year for the club.
