Mines Management's key asset is its Montanore silver-copper project in northwest Montana, which hosts in-situ mineralization estimated at more than 230 million oz of silver and nearly 2 billion lb of copper, not considering dilution or subeconomic
Geological Survey report said the nation's known deposits of mineral raw materials were seriously depleted, and future supplies must come from subeconomic
deposits or from potential resources yet to be discovered.
4) The reserve base includes all resources whose extraction is currently economic (reserves), marginally economic (marginal reserves) and subeconomic
This category includes reserves and subeconomic
resources, byproduct production, stocks and flows of materials available for recycling, in-use stocks, material flows, and materials embodied in internationally traded goods.
Waste rock is stored on-site and because it can contain content of subeconomic
minerals it must be managed.
The resulting dysfunctional water systems are widely visible across the world--for example, in subeconomic
tariffs due to the populist policies of local mayors.
A perfect example is the recently concluded Public Protector investigation into corruption in state subsidies paid for subeconomic
This operation, termed 'phytomining' includes the generation of revenue by extracting saleable heavy metals from otherwise subeconomic
ore bodies (Robinson et al.
Along this dimension, mineral resources are conventionally described as economic (profitable today), marginally economic, subeconomic
, and other.
But such subeconomic
use of the land would be highly speculative at present.
This scenario is consistent with Winter's (1988) model of the insurance cycle, which leads to a protracted period of subeconomic
prices and slow erosion of each insurer's capital base.
The lower vein system was anomalous in gold, but values were subeconomic