Geschichte

Erkundung

1957 – 1960 108 webSuch-Erkundungsarbeiten auf Uran durch SDAG Wismut über und unter Tage: Kernbohrungen, Schurfgräben/Flachschürfe, Bohrtiefe 413 m
 
1960 – 1961 kurzzeitige Nasskonservierung der Grube
1961 – 1966 87 webErkundungsarbeiten auf Magnetitskarne, Eisenerzabbau (1965/1966) durch Maxhütte Unterwellenborn.
 
1966 – 1974 Nasskonservierung der Grube
1974 – 1977 90 webUntertägige Zinnerkundung im 3. Skarnlager auf der 41 O-m-Sohle, übertägige Bohrungen (Netzdichte 200 m x 200 m, verdichtet auf 100 m x 100 m, lokal noch weiter) bis 1975 zur Zinnerkundung, von 1977 bis 1988 zur Wolframerkundung (dabei 1985 bis 1988 detaillierte Erkundung im 5. Lager durch Netz 25 m x 25 m).

1977 – 1982 Nasskonservierung der Grube
1982 – 1988 mining webDetaillierte Erkundung von bestimmten Bereichen der Zinnvererzung im 3. Lager und der Wolframvererzung im 4. Lager mittels Auffahrungen und Unter-Tage-Bohrungen im Netz  60 m x 12,5 m.

1981 – 1988 Detailed drilling for tin deposit 3 and for tungsten deposit 4 through shaft  sinking and horizontal adits (grid 60 m x 12.5 m; some areas 30 m x 25 m, 30 m x 12.5, 30 m x 6 m) The property is explored through the shaft 24 (254.7 m depth) and adit 19. From adit 19 the blind shaft 12 (158 m depth) has been sinked to 410 m level.

 
  • Drives
6,816 m
 
  • Cavity removed
52,529 m³
 
  • Horizontal adits:
    Depth level 410 m:
    Depth level 350 m:
    Depth level 315 m:
    Cavity:
6,802 m
2,801 m
3,503 m
497 m
51,229 m³ + 1,248 m³
 
  • Total drillings:
46,344 m
 
  • Core drillings:
    Depth level 410 m:
    Depth level 350 m:
    Depth level 315 m:
34,577 m
11,815 m
22,543 m
218 m
 
  • other drillings:
    Depth level 410 m:
    Depth level 350 m:
    Depth level 315 m:

11,767 m
5,320 m
6,395 m
52 m

1989 Flooding and maintenance
There is a connection from shaft 12 to shaft 24. At that time substantial reserves    
tungsten and tin ore has been identified. Furthermore, additional minerals like  fluorspar, zinc, copper, indium, cadmium, silver, magnetite has been found.
(Source: SDAG Wismut, 1988)


Surface exploration

Drilling grid: 800 m x 400 m
400 m x 200 m
200 m x 200 m

The core area Pöhla-Globentein has been drilled through grids 100 m x 100 m.
Total drilling number: 112,545 m (HÖSEL, 2003)


? Underground exploration

1957 – 1960 Exploration by SDAG Wismut from surface and in the mountain:

                       drillings, ditches, shaft sinking 413 m.

1961 – 1966 Exploration for magnetite by geological exploration,

                       South Freiberg and Nordhausen

1974 – 1977 Underground exploration for tin in skarn deposit 3 on level down 410 m

                       by SDAG Wismut

                       Drilling on surface (grid 200 m x 200 m, densified 100 x 100 m,

         local spots further densified) for tin till 1975,

                       From 1977 to 1988 exploration for tungsten (from 1985 – 1988 detailed

        exploration deposit 5 through grid 25 m x 25 m)

1981 – 1988 Detailed drilling for tin deposit 3 and for tungsten deposit 4 through shaft  sinking and

         horizontal adits (grid 60 m x 12.5 m; some areas 30 m x 25 m, 30 m x 12.5, 30 m x 6 m)

         The property is explored through the shaft 24 (254.7 m depth) and adit 19. From adit 19   

         the blind shaft 12 (158 m depth) has been sinked to 410 m level.

? Drives                                                      6.816 m

? Cavity                                                    52.529 m 3

? Horizontal adits:                                                 6.802 m

                  Depth level 410 m:                                2.801 m

                  Depth level 350 m:                                3.503 m

                  Depth level 315 m:                                   497 m

                  Cavity:                                                     51.229 m 3 + 1.248 m3

          ? Total drillings:                                      46.344 m

                ? Core drillings:                                       34.577 m

  Depth level 410 m                                              11.815 m

  Depth level 350 m:                             22.543 m

  Depth level 315 m:                                   218 m

                ? Coreless drillings:                                              11.767 m

  Depth level 410 m                                                5.320 m

  Depth level 350 m:                                6.395 m

  Depth level 315 m:                                     52 m

1989             Flooding and maintenance

                      There is a connection from shaft 12 to shaft 24. At that time substantial reserves    

        tungsten and tin ore has been proven. Furthermore, additional minerals like  fluorspar,       

       zinc, copper, indium,cadmium, silver, magnetite has been found.

       

(Source: SDAG Wismut, 1988)