1. IN A VEHICLE DUMPING APPARATUS, A FOUNDATION HAVING LOAD BEARING MEMBERS DISPOSED SUBSTANTIALLY AT GROUND LEVEL, A VEHICLE PLATFORM SUPPORTED ON SAID BEARING MEMBERS AND PIVOTED AT ONE END FOR UPWARD SWINGING MOVEMENT OF THE OTHER END THEREOF FROM SAID BEARING MEMBERS, CURVED TRACK MEANS EXTENDED LONGITUDINALLY OF SAID PLATFORM AND EXPOSED FROM THE UNDERSIDE OF SAID PLATFORM, MEANS PIVOTALLY CONNECTING ONE END OF SAID TRACK MEANS ON SAID PLATFORM, MEANS FOR DETACHABLY SECURING THE OTHER END OF SAID TRACK MEANS TO SAID PLATFORM, WITH THE PLATFORM HAVING AN OPENING THEREIN ABOVE SAID TRACK MEANS, SAID TRACK MEANS BEING LOCATED INTERMEDIATE THE ENDS OF SAID PLATFORM, A PIT MOUNTED CYLINDER AND PISTON ASSEMBLY ARRANGED BELOW SAID TRACK MEANS FOR EXTENSION UPWARDLY OF THE PISTON OF SAID ASSEMBLY, AND ROLLER MEANS ON THE UPPER END OF SAID PISTON ENGAGEABLE WITH SAID TRACK MEANS, WITH EXTENSION OF SAID PISTON ACTING TO SWING SAID PLATFORM AWAY FROM SAID LOAD BEARING PORTIONS, WITH SAID ROLLER MEANS AND ASSEMBLY, WHEN THE PLATFORM IS SUPPORTED ON SAID LOAD BEARING MEMBERS, BEING ACCESSIBLE THROUGH SAID OPENING ON UPWARD PIVOTED MOVEMENT OF SAID TRACK MEANS ABOUT SAID ONE END THEREOF.