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With
increasing discovery costs, environmental regulation, permitting
costs, and reclamation costs for land-based mines, the alternative
of mining seabed deposits is now becoming highly attractive. Mineral
exploration groups currently face increasing competition, and
increased discovery and development costs as exploration extends
to remote and relatively hostile physical and political environments.
Finding a commercially viable mine has never been easy, and the
opportunity to explore virgin terrain today is very remote. Explorers
are confronted with deep ore bodies, complex exploration models,
and high sample acquisition cost.
DSM
has an alternative to the industry pattern in the mining industry
of ever increasing costs and risks. The operations planned by
DSM will be accompanied by improved rate of discovery of large
deposits, minimal environmental impacts, and conservation of potentially
at-risk land resources. There has been little commercial seabed
exploration to date; though recent research suggests that large
deposits may be as abundant on the seabed as they ever were on
land. Geological models of formation, particularly for VMS deposits
have greatly improved recently, due in part to the observations
of the real-time, seabed formation of unmetamorphosed deposits.
Seabed exploration tools have been developed to a high degree
of accuracy in recent years, approaching and sometimes exceeding
the efficiency of land-based methods. We have every reason to
believe that the rate of discovery of large deposits will be much
higher on the seabed than on land.
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| Seabed
mines will not have the inherent environmental and public health
risks to overcome which are characteristic of land-based mines.
The primary problem with land-based mines is the presence of sulfide
minerals in the overburden and tailings. Sulfides, when exposed
to oxygen and fresh water, produce sulfuric acid, the primary culprit
in causing heavy metal contamination and other hazards. In the ocean,
seawater prevents this sulfuric acid production completely due to
its high buffer capacity. The same processes, which remove the metals
from hydrothermal vent emissions, will ensure that no acid mine
tailings will ever be formed on the seabed.. |
Noranda's Kidd Creek
open pit mine, Canada.
An ancient black smoker deposit. Today's
mined value of this deposit is
approximately $30 billion US
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