Don't roast anything directly from the freezer. The most likely result is burning the exterior while the interior likely doesn't cook at all. Always thaw the meat before roasting; this goes for any meat. Once the meat is thawed it will cook evenly.
There is no grill in a dryer. What exactly are you trying to locate? Is it the heating element, you're looking for? If so, I will need to know who the manufacturer is and the model number of the dryer.