This seems to be the workprint of an unfinished film. Apparently it deals with two Clark Construction Equipment models (the 55A and the 110) as they do their respective operations in a large dirt pit on a sunny day. The following is essentially a shot by shot list of the proceedings... LS of the 55A tractor driving in circles ... LS of the 55A raising and lowering its trough ... LS of 55A picking up dirt with its trough ... LS of the 110 rear dump tractor dumping a load of dirt ... LS of the 110 doing drastic turns in the dirt pit ... LS of both model tractors working together in the pit; the 55A scoops up a large load of dirt and dumping it into the 110 (shown several times from several angles, all of which are LS's) ... LS of 110 driving off with a full load, does drastic turn, then dumps load at the edge of the pit.