Mr Margetts said it was a very "delicate" operation as care had to be taken not to damage the mine's structure.

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Companies such as mine believe it is going to be virtually impossible to succeed in the new reward structure without recognizing a reality of this new environment.

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The coal industry is a good example of how managements get carried away in the up cycle, committing serious money to new mine development and buying sizable coal operators at premium prices, further leveraging their capital structure.

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