Altos Hornos De Vizcaya

WORLD MINING, WHAT'S GOING ON IN WORLD MINING, V. 29, NO. 10SEPTEMBER, 1976, P. 94.WORLD MINING YEARBOOK, CATALOG, SURVEY & DIRECTORY NUMBER1976, WORLD-WIDE MINING DEVELOPMENTS, V. 29, NO. 7,JUNE 25, 1976, P. 169, 170.WORLD MINING, SPAIN HAS IMPORTANT METAL AND COAL MINES TOSHOW MINING CONGRESS, V. 6, NO. 5, MAY 1970, P. 30-34.MINING MAGAZINE, MINING ACTIVITY IN THE WESTERN WORLD,V. 125, NO. 3, SEPTEMBER 1971, P. 259 & 276.1976, WORLD-WIDE MINING DEVELOPMENTS, V. 31, NO. 7,JUNE 25, 1978, P. 236 & 238.ALZUGARAY, JUAN J., UNITED NATIONS INDUSTRIAL DEVELOPMENTORGANIZATION, THIRD INTERREGIONAL SYMPOSIUM ON THE IRONAND STEEL INDUSTRY, BRASILIA, BRAZIL, 14-21 OCTOBER 1973AGENDA ITEM 10, SURVEY OF THE DEVELOPMENT OF THE SPANISHSTEEL INDUSTRY, ID/WG. 146/36, APRIL 9, 1973, P. 1-28.1978 ENGINEERING AND MINING JOURNAL INTERNATIONAL DIRECTORYOF MINING AND MINERAL PROCESSING OPERATIONS, MCGRAW-HILL1978, P. 347.