They doubled the field's output and increased proved recoverable reserves to 20 million barrels.

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The field will have no problem supporting that output for many years.

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Agricultural output was also greatly stimulated by the creation of three-field farming instead of the old Roman practice of two-field farming.

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As Pemex's giant Cantarell field continues its steep decline, Mexico's oil output is falling.

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The explorer Saturday started production at Aishwariya, the third-largest field in Rajasthan, and aims to reach 10, 000 barrels of output at its peak.

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