Educational Mining Trail Přebuz
Main Shaft
Educational Mining Trail Přebuz
The Hlavní (“Main“) Shaft Přebuz is located above the richest and most productive tin ore district in the western Krušné hory Mts. According to the original mining documentation, it is 170 meters deep. It was in operation from 1940 to 1958. Today is flooded and its mouth secured with thick concrete slab. From the headframe remained concrete skeleton, which is recorded as a technical monument. The whole building with angled roof had wooden casing, which in the 1960th gradually felled out. On the top of the headframe was until 1975 attached wooden symbol – large crossed mining hammers with the inscription “Zdař Bůh” (“Good Luck”). Below hoppers on the ground floor, there is a cone of spilled greisen tin ore.
The Main Shaft from the West in 1999
Greisen is a rock composed mainly of quartz and mica, which originates in the final stages of solidification of granite magma. It is the result of influence of magmatic volatiles on the mother rock (here granite of the “Erzgebirge” type) and the host rock. Greisens tend to concentrate tin, tungsten, molybdenum and other metals. This type of rock transformation is called pneumatolysis.
Miners in the Otto Mine, on the right Director Stein (Photo by H. Klumpner 1933)
The protection zone of the Main Shaft is enclosed for safety reasons. A concrete wall leads from the Main Shaft to the east. It is a rest of covered corridors through which workers pushing carts of mined ore to the concentration plant. In the underground, in the floor 60 m depth, the shaft is connected to the earlier Otto Shaft from 1930 (the trail leads around). The headframe of the Otto Shaft stood above the upper end of the plant, but was demolished, and the pit was backfilled.
Grey bands of tin bearing greisen in granite
This text was written by Petr Rojík.
