Mine of Cotopax Exploration Co is on western slope of Andes, at altitude 6000 ft; history; geology; ore mineral is chiefly chalcopyrite; successive periods of development, from 1937 to 1946; details of underhand square set pillar mining; comparison of costs and efficiency of overhead panel and underhand mining. (Bul n 418 Feb 1947)
Mining of Mercedes orebody, Macuchi, Ecuador, South America
Can Inst Min Met -- Trans
1947
8 pages
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
Abel delivers mining pumps to South America
Online Contents | 2015
Revenue Statistics in Latin America: Ecuador (Edition 2016)
TIBKAT | 2016
|Revenue Statistics in Latin America: Ecuador (Edition 2020)
TIBKAT | 2020
|Revenue Statistics in Latin America: Ecuador (Edition 2015)
TIBKAT | 2015
|Revenue Statistics in Latin America: Ecuador (Edition 2018)
TIBKAT | 2018
|