Defrosting Frozen Beef:
Frozen beef my be defrosted before or during cooking. It should be defrosted in the original wrapping in the refrigerator. Defrosting meat at room temperature is not a recommended procedure. The following is a timetable for defrosting frozen beef in a refrigerator:

Large Roast: 4-7 hours (per pound)
Small Roast: 3-5 hours (per pound)
Steak one inch thick: 12-14 hours