Historians assert that a new landmawk in development of humanity started from invention of a wheel. And they are right. So here it is, the wheel. And the model of a mine shaft of Demidov dated the XVIII century.
A wheel from the old cart that was used to carry rock for washing in the nearest brook.
Miner’s lamps dated the XVIII century
Ladders made with no nails
All components are made of Siberian larch