Value and depreciation of mineral resources over the very long run: An empirical contrast of different methods

The paper contrasts empirically the results of alternative methods for estimating thevalue and the depreciation of mineral resources. The historical data of Mexico andVenezuela, covering the period 1920s-1980s, is used to contrast the results of severalmethods. These are the present value, the net price method, the user cost method andthe imputed income method. The paper establishes that the net price and the user costare not competing methods as such, but alternative adjustments to different scenariosof closed and open economies. The results prove that the biases of the methods, ascommonly described in the theoretical literature, only hold under the most restrictedscenario of constant rents over time. It is argued that the difference between what isexpected to happen and what actually did happen is for the most part due to a missingvariable, namely technological change. This is an important caveat to therecommendations made based on these models.

Informe de la Reunión de Cooperación Horizontal para el Desarrollo de los Recursos Mineros de América Latina = Report of the Meeting on Horizontal Co-operation for the Development of the Mineral Resources of Latin America

Incluye Bibliografía

Inventory of mineral resources in CDCC countries

Includes bibliography

Mineral resources in Lower Brule Indian Reservation

On the Lower Brule Indian Reservation in South Dakota, about 3 million tons of metallic manganese are in low-grade deposits in the DeGrey Member of the Pierre Shale on the reservation. The geology and methods of mining and processing this sub-economic mineral resource have been studied extensively; technologically, extraction of manganese is possible. However, an efficient, economical method to separate manganese-bearing nodules from the shale host rocks has yet to be found. The manganiferous nodules occur in the Oacoma zone of the Sully shale member (De-Grey Member) which is a subdivision of the South Dakota Pierre Shale formation. These nodular deposits have an interesting similarity in stratigraphical position, lithology and manganese content to those of the Porcupine Mountain area in Manitoba.

Geological character and mineral resources of south central Lake Erie /

"October 1982."

Mineral resources and international strife.

Mode of access: Internet.

List of publications and summary of the mineral resources of Wyoming.

The Summary I. 1-15, being the Press bulletin no. 10.

Geology and mineral resources of the Hennepin and La Salle quadrangles,

Mode of access: Internet.

Geology and mineral resources of the Beardstown, Glasford, Havana, and Vermont quadrangles /

Includes bibliographical references and index.

Geology and mineral resources of the Joliet quadrangle ... /

Reprinted from Illinois. State geological survey. Bulletin no. 51.

Geology and mineral resources of the Carbondale Quadrangle.

Includes bibliographical references.

Geology and mineral resources of the Alexis quadrangle,

Four folded plates (maps, and 2 diagrams) in pocket.