This industrial film from Clark construction equipment revolves around the Michigan 675, a 72,000 pound, 24 yard tractor shovel that quite simply is enormous. The footage used in this particular film is identical to that found in WPA 1536 and WPA 1544 so please see them for detailed logs regarding this picture. The only disparity is that WPA 1538 features a lengthy segement on coal mining and overburden; what it is and how to properly attack a mountain.