Other fields are familiar with human imperfectibility, and take steps to ameliorate it.

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These smaller firms hung on to plots, sometimes for decades, trying successions of innovative techniques to squeeze out every last drop of hydrocarbons and in the process becoming extremely familiar with the geology of their fields.

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"Gun violence is a problem nationwide, and sadly in the state of Colorado, we are all too familiar with some of these tragedies, " Fields.

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