(6 Bilder) aus USA/South Dakota/Lawrence Co./Lead District/Lead/Homestake Mine
des Yates-Schachtes, Homestake Mine, Lead Distr., South Dakota, USA. 1975. Eine der größten ihrer Art, daher konische Seillaufwicklung.
Lead Distr., South Dakota, USA. 1975. Yates Schacht: oben Mitte, Mühlen (Zerkleinerung): links unten-mittig.
Homestake Mine, Lead Distr., South Dakota, USA.
Lead Distr.,South Dakota, USA; 1988.
Lead Distr., South Dakota, USA. 1988.
(1 Bild) aus USA/South Dakota/Pennington Co./Keystone District/Keystone/Holly Terror Mine
Keystone, Keystone Distr., Pennington Co., South Dakota, USA. 1988