The truck enters the plant. Workers shovel the cement into a concrete mixer. The concrete mixer is working. Conveyor belt type. A woman uses levers to control a conveyor belt, another woman mixes cement with sand with a shovel. The process of making concrete blocks. The woman at the block mold. Workers at the machine. The workers transfer the finished blocks to the stand, take the stands to the warehouse. A woman measures the height of the blocks with a ruler. The workers in the shop are talking, smiling. General view of the plant.