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This excerpt taken from the ACI 10-K filed Mar 1, 2010. Our Coal
Reserves
We estimate that we owned or controlled approximately
3.9 billion tons of proven and probable recoverable
reserves at December 31, 2009. Our coal reserve estimates
at December 31, 2009 were prepared by our engineers and
geologists and reviewed by Weir International, Inc., a mining
and geological consultant. Our coal reserve estimates are based
on data obtained from our drilling activities and other
available geologic data. Our coal reserve estimates are
periodically updated to reflect past coal production and other
geologic and mining data. Acquisitions or sales of coal
properties will also change these estimates. Changes in mining
methods or the utilization of new technologies may increase or
decrease the recovery basis for a coal seam.
Our coal reserve estimates include reserves that can be
economically and legally extracted or produced at the time of
their determination. In determining whether our reserves meet
this standard, we take into account, among other things, our
potential inability to obtain a mining permit, the possible
necessity of revising a mining plan, changes in estimated future
costs, changes in future cash flows caused by changes in costs
required to be incurred to meet regulatory requirements and
obtaining mining permits, variations in quantity and quality of
coal, and varying levels of demand and their effects on selling
prices. We use various assumptions in preparing our estimates of
our coal reserves. You should see “Inaccuracies in our
estimates of our coal reserves could result in decreased
profitability from lower than expected revenues or higher than
expected costs” contained under the heading “Risk
Factors.”
Table of Contents
The following tables present our estimated assigned and
unassigned recoverable coal reserves at December 31, 2009:
These excerpts taken from the ACI 10-K filed Feb 27, 2009. Our Coal
Reserves
We estimate that we owned or controlled approximately
2.8 billion tons of proven and probable recoverable
reserves at December 31, 2008. Our coal reserve estimates
at December 31, 2008 were prepared by our engineers and
geologists and reviewed by Weir International, Inc., a mining
and geological consultant. Our coal reserve estimates are based
on data obtained from our drilling activities and other
available geologic data. Our coal reserve estimates are
periodically updated to reflect past coal production and other
geologic and mining data. Acquisitions or sales of coal
properties will also change these estimates. Changes in mining
methods or the utilization of new technologies may increase or
decrease the recovery basis for a coal seam.
Our coal reserve estimates include reserves that can be
economically and legally extracted or produced at the time of
their determination. In determining whether our reserves meet
this standard, we take into account, among other things, our
potential inability to obtain a mining permit, the possible
necessity of revising a mining plan, changes in estimated future
costs, changes in future cash flows caused by changes in costs
required to be incurred to meet regulatory requirements and
obtaining mining permits, variations in quantity and quality of
coal, and varying levels of demand and their effects on selling
prices. We use various assumptions in preparing our estimates of
our coal reserves. You should see “Inaccuracies in our
estimates of our coal reserves could result in decreased
profitability from lower than expected revenues or higher than
expected costs” contained under the heading “Risk
Factors” beginning on page 30 for more information.
The following tables present our estimated assigned and
unassigned recoverable coal reserves at December 31, 2008:
Our Coal Reserves We estimate that we owned or controlled approximately 2.8 billion tons of proven and probable recoverable reserves at December 31, 2008. Our coal reserve estimates at December 31, 2008 were prepared by our engineers and geologists and reviewed by Weir International, Inc., a mining and geological consultant. Our coal reserve estimates are based on data obtained from our drilling activities and other available geologic data. Our coal reserve estimates are periodically updated to reflect past coal production and other geologic and mining data. Acquisitions or sales of coal properties will also change these estimates. Changes in mining methods or the utilization of new technologies may increase or decrease the recovery basis for a coal seam. Our coal reserve estimates include reserves that can be economically and legally extracted or produced at the time of their determination. In determining whether our reserves meet this standard, we take into account, among other things, our potential inability to obtain a mining permit, the possible necessity of revising a mining plan, changes in estimated future costs, changes in future cash flows caused by changes in costs required to be incurred to meet regulatory requirements and obtaining mining permits, variations in quantity and quality of coal, and varying levels of demand and their effects on selling prices. We use various assumptions in preparing our estimates of our coal reserves. You should see “Inaccuracies in our estimates of our coal reserves could result in decreased profitability from lower than expected revenues or higher than expected costs” contained under the heading “Risk Factors” beginning on page 30 for more information. The following tables present our estimated assigned and unassigned recoverable coal reserves at December 31, 2008: | EXCERPTS ON THIS PAGE:
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