As for labor difficulties, they will no doubt be part of an airline merger, but the conflict between the two groups of US Airways pilots resulted from a controversial seniority ruling that, in the history of the airline industry, has been a unique event.

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It's easy to believe, given the difficulties of making any movie that's halfway decent, let alone a labor of love. (The filmmaker also refused to make it without Ron Perlman, despite pressures to cast a more bankable star.) Among Mr. del Toro's colleagues in this elegant enterprise are the production designer Stephen Scott and the editor Peter Amundson.

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These include increasing difficulties of mining far below the ground in the key producing nation of South Africa, as well as labor issues that mean higher costs and the threat of supply disruptions due to strikes.

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