Vending is a business that involves the use of vending machines, that is, the implementation process does not require the participation of the seller. The machine is inherently such a seller. The client is able to communicate with the device through the control panel and payment mechanism.
By the way, the first prototypes of such devices appeared before our era, in 215. Then, in Alexandria, the mathematician Heron was able to describe the device by which Holy water was given to the parishioners of the temple when the coin was lowered into the slot intended for this purpose. 1076 was marked by the sale of pencils through vending machines – it was practiced in China. Continue reading
The combined machine, which is designed for loading rocks into transport, as well as with which the array is destroyed, is called a mountain combine.
Treatment mountain harvester is the harvester, which is engaged in mining. Accordingly, the rifled mountain combine is the one that deals with the rifled coal mining and prepares the surface of the treatment face.
In 1932 for the first time mountain combines were created. Miner consists of such parts as the Executive body that deals with destruction of the array and loading with the help of which finished off loading the material for transportation. Continue reading