Elevator buckets are made of steel fabricating or casting. Buckets volumes depends on lift capacity. Buckets are fastened on rubber belts by bolts in certain distance. Motors from mesblate drive rubber belts to rotate. Thus, buckets will rotate along rubber belt from down to up and down again. During rotation, buckets will contact steel abrasives at bottom. Some of abrasives will be captured and collected into buckets. These abrasives will elevate with buckets to top of shot blasting machine where buckets will change their direction from up to down. Thus steel abrasives will flow out down to abrasives. And empty buckets will move downward for another recycling.