ore-body

Mining, haulage and beneficiation are performed sequentially, and other essential tasks are negelected for the present time; as a result, work activities such as development of deposits (even where this is possible internally inside the ore-body structure), timbering and maintenance of galleries (see photo) are not performed.

Chapter 8 1993

In some cases of flat deposits, crosscuts into the walls, or even levels under the ore-body, are justifiable.

Principles of Mining Valuation, Organization and Administration Herbert Hoover 1919

The construction of an incline from the surface to the ore-body will be more costly than a combined shaft, for until the horizon of the ore is reached (at _D_) no crosscuts are required in the vertical section, while the incline must be of greater length to reach the same horizon.

Principles of Mining Valuation, Organization and Administration Herbert Hoover 1919

The ore-body is regular in size, else loose ore will lodge on the foot wall.

Principles of Mining Valuation, Organization and Administration Herbert Hoover 1919

On the other hand, the predetermination of the location of the ore-body justified expenditure.

Principles of Mining Valuation, Organization and Administration Herbert Hoover 1919

For instance, in the A mine, with an ore-shoot 1000 feet long and 10 feet wide, on its bottom level, the minimum extension under this hypothesis would be a wedge-shaped ore-body with its deepest point 500 feet below the lowest level, or a minimum of say 200,000 tons.

Principles of Mining Valuation, Organization and Administration Herbert Hoover 1919

Shortly after the middle of the sixteenth century the great _Veta Madre_, or "mother lode," of Guanajuato was pierced, with an ore-body 100 feet wide.

Mexico Its Ancient and Modern Civilisation, History, Political Conditions, Topography, Natural Resources, Industries and General Development Martin [Editor] Hume 1919

If the ore-body is 1,000 feet long and 13 feet wide, it will furnish of gold ore 1,000 tons per foot of depth; hence the ore-body must extend 1,160 feet deeper to justify the price.

Principles of Mining Valuation, Organization and Administration Herbert Hoover 1919

-- The whole theory of sampling is based on the distribution of metals through the ore-body with more or less regularity, so that if small portions, that is samples, be taken from a sufficient number of points, their average will represent fairly closely the unit value of the ore.

Principles of Mining Valuation, Organization and Administration Herbert Hoover 1919

The application of any particular method depends upon the dip, width of ore-body, character of the ore and walls, and cost of materials.

Principles of Mining Valuation, Organization and Administration Herbert Hoover 1919