The story
1880
The President of Honduras, Marco Aurelio Soto, offered companies that invested in the mine in San Juancinto a 20-year exemption from all taxes. In 1880, Julius Valentine, of New York City founded the New York and Honduras Rosario Mining Company, exchanging 50% of the Company's stock for the mining rights of the El Rosario deposits at San Juancito which were owned by Soto. Washington S. Valentine, son of Julius took over his father's post and became the figurehead of the corporation. The firm would soon become the largest mining company in the country. The Valentines also secured control of the wharf and railway at Puerto Cortes on the Honduran Atlantic Coast. In 1888, Washington Valentine founded the first private bank in Honduras, Banco de Honduras, in Tegucigalpa. Valentine and the Honduras President, Luis Bogran, owned shares in the bank.
Marco Aurelio Soto, was a major shareholder in the mining company. One of his sons married a daughter of Washington Valentine.
The Rosario Mine consisted of six holdings, each of 600 yds. long by about 200' wide, somewhat less than 500 acres (2.0 km2), where it had all mining, timber and water rights.
1900 – 1929
By 1904 accretions by Honduras Government grant and purchase increased the territory to over 12,000 acres (20 square miles). By purchase it had acquired the timber rights in the adjoining towns of Cantarranas and Valle de Angels. The mine had 16 levels, 100 feet (30 m) apart, with regular connections. The deepest level runs about 11⁄2 miles into the mountain. Ore reserves estimates in 1904 were 64,897 tons. In that year the company produced 1,172,377 oz. of silver, 5,202 oz. of gold, of a total value of $721,374.87. Expenses in Honduras were $396,842.72 and gross expenditures were $543,294.16, leaving a net profit of $217,289.78.
On August 24, 1916 the stockholders of the New York & Honduras Rosario Mining Company voted to increase the board from nine to eleven. One of the new vacancies was filled by H. A. Guess, Managing Director of the mining department of the American Smelting & Refining Company, owned by Daniel Guggenheim. He has been identified with that company for fifteen years, and was also consulting engineer of the Braden Cooper and Chile Cooper Companies.
On April 30, 1917, the Company secured a controlling interest in the San Marcos mine, located at Sabana Grande, Honduras, and owned by the Sabana Grande Honduras Mining Company.
William A. Prendergast was selected as president of the company in 1919. By 1920 WS Valentine was not in the Board of Directors anymore. In 1922 Prendergast becomes chairman of the Board of Directors and Lewis L. Clarke, president of the Company.
1930 – 1978
In 1930 the Board of Directors was: WM. A. Prendergast, Chairman; Sidney Abbey; W.C. Langley; Lewis L. Clarke; W.L. Saunders; H. A. Guess; M. F. Soto; Irving Heidell; Ambrose G. Todd; Dr. J. Ralph Jacoby; Dr. Julius J. Valentine; P.R. Weiler.
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In 1954, Robert M. Reininger took over leadership of the 75-year-old New York and Honduras Rosario Mining Company, which then held only one old, depleted gold mine and a small new startup mine, El Mochito, in Honduras. From these limited resources, Reininger built Rosario into a powerful and diversified mining and oil company, with interests stretching out to North America, South America, and the North Sea.
Under Reininger's leadership, El Mochito, with its rich ore and spectacular wire silver, soon became Central America's largest precious and base metals producer. Out of El Mochito's profits, Rosario made successful investments in new projects in the United States, Canada, Mexico, Peru, Nicaragua, and the Dominican Republic, as well as major Canadian gas discovery in 1969 and 1970s oil play in the British North Sea. From these projects flowed a cornucopia of gold, silver, copper, lead, zinc, mercury, granite, limestone, and petroleum. These properties, largely developed internally, multiplied the value of the company many times from 1954 through 1980, when Rosario was acquired by AMAX, Inc. Jorge Blanco was made President and led the company until his retirement. He was able to negotiate the terms of the settlement of the indemnification for the mines (La Rosita, et al confiscated by the Sandinista regime) with the post Sandinista government of Violeta Barrios de Chamorro. He led the company until his retirement in 1998.
In 1969, Rosario discovered the Pueblo Viejo oxide gold deposit in the Dominican Republic, which became at startup in 1975 one of the largest gold mines in the Americas, producing more than 400,000 ounces per year. Also in 1969, Rosario discovered Alberta's prolific Dunvegan Gas Field, up to that time the largest gas field found in Canada. In the 1960s, the company acquired an industrial minerals business, producing granite and limestone in Florida. In 1973, the company was rename Rosario Resources Corporation to reflect its greater geographic and product diversification. In 1976, Rosario's acquisition of the Fresnillo Company in Mexico helped it become the largest silver producer in the Western Hemisphere.
In the late 1970s, the rapid rise of prices for all of Rosario's products resulted in spectacular profits for the company, and it became a highly visible target for larger companies searching for growth. After a takeover fight, Reininger negotiated highly rewarding terms for the merger of the company into AMAX in April 1980. AMAX Inc. acquired Rosario Resources Corporation for $465 million. The Company independent life ended.
In 1993, AMAX was merged with Cyprus Minerals Company to create Cyprus Amax Resources.
From Wikipedia’s article on Rosario Mining Company, shared under CC BY-SA 4.0.3