A GROUP OF EES WERE CLEANING OUT TRUCK SCALE BASEMENT WITH VAC TRUCK AND BUCKETS. THEY REMOVED TWO SECTIONS OF FLOOR GRATING (APPROX 4'X4') BARRICADING THE NORTH ENTRANCE. THROUGH THIS OPENING THEY LOWER A 55 GAL DRUM, FILLED DRUM AND WITH CARRY DECK CRANE REMOVED FULL DRUM. THIS PROCESS CONTINUED UNTIL COMPLETION OF JOB. EES WERE ROLLING UP, EE RUNNING UPSTAIRS FROM BASEMENT, CALL