Old Salt Mine Extraction Machine Royalty-Free Stock Image

Old salt mine extraction machine was made of pinewwod in 1881; the machine has four arms, each put to action byu one or two turn taking horses. A hemp rope was folded around the body of machine and passed through two tunnels up above the extraction well, where it was passed over two steel pulleys. While a rope end was raised, the other end was down. The loading/unloading operation taking place simultaneously, alternatively.