manual hollow block making machine

How many workers are china concrete block making machine manufacturer process?
1 worker to load raw materials into the mixer by wheel barrow or by small wheel loader machine;
1 worker operate the host brick machine
2 workers carry the produced fresh blocks to curing area.
Total 4 workers are needed.
The good quality concrete block making machine factories can produce many different types, sizes blocks or bricks like hollow block, solid brick, interlocking blocks, curbstones etc, by changing different block mould.