Mine roof support plate
FIG. 1 is a bottom, perspective view of a mine roof support plate showing our new design; 
     FIG. 2 is a bottom plan view of FIG. 1; 
     FIG. 3 is a side elevational view of FIG. 1; 
     FIG. 4 is a top plan of FIG. 1; 
     FIG. 5 is a bottom perspective view of a second embodiment of the design of FIG. 1, the only difference being the bending of a corner and the inclusion of an aperture in said corner.