It is pretty difficult to find the official results but some results are slowly coming out...
Ronald Johnson:
40 Time: 4.46 40 Low: 4.37 40 High: 4.54*
Bench Press: 16 reps
Broad Jump: Did not Participate
Vertical Jump: Did not Participate
3-Cone Drill: Did not Participate
Jurrell Casey:
40 Time: 5.06 40 Low: 4.93 40 High: 5.17*
Bench Press: 26 Reps
Broad Jump: 8' 5"
Vertical Jump: 27 1/2
3-Cone Drill: 7.51
Tyron Smith:
40 Time: DNP 40 Low: DNP 40 High: DNP*
Bench Press: 29 Reps
Broad Jump: Did not Participate
Vertical Jump: Did not Participate
3-Cone Drill: Did not Participate
*All 40 times taken from NFL Draft Scout.com. Other stats taken from FFToolBox.com
Watch NFL Scouting Combine Feb 24 - Mar 1