Hi Gang:
Here is a photo of a section of my shop floor. I was left with 4'x4' dance floor modules and the dance group didn't want them back. Since I was retired and knew I would be spending more time in the shop I decided to put them down. The plywood is 3/4 CDX and has 3/4" plywood tabs on the underside to lock them together. I also stapled 2" squares of carpet on the bottom. The unexpected plus is I can screw projects to the floor during construction and then just unscrew them when finished.
Click image for larger version.  Name: 15 - Trail Assembly Lathe Drop 2.JPG  Views: 112  Size: 1.06 MB  ID: 49556
I did stain and vanish the plywood that makes is easier to sweep.
Carl.