| 1. | Sustainability is something we give a great deal of attention to.
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| 2. | "Now we're talking about sustainability ."
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| 3. | But others are more skeptical about the sustainability of the boom.
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| 4. | These gains have obviously raised questions of sustainability . . ..
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| 5. | "The issue is sustainability, " he said.
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| 6. | Even if it does, the key is sustainability and credibility.
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| 7. | We share the concerns of the market about sustainability of earnings.
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| 8. | What people are concerned about is the sustainability of those revenues.
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| 9. | It was pro-development, without any regard for sustainability.
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| 10. | What will you do to ensure the sustainability of those profits?
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