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had been mining

  • past perfect progressive
    of mine.
    mine
    pronoun
    a form of the possessive case of I used as a predicate adjective.

Example Sentences

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The nuclear material came from an unidentified leader of an “ethic insurgent group” in Myanmar who had been mining uranium in the country, according to prosecutors.

From Seattle Times Feb. 21, 2024

When the corporate incursion to the valley began in earnest, in 2003 or so, local farmers had been mining the aquifer gently for the last 60 years.

From New York Times Jul. 19, 2018

Hours earlier, the Guardian reported that the NSA had been mining phone records from millions of customers of a subsidiary of Verizon Communications.

From Reuters Jun. 8, 2013

“I scoffed at it initially,” Mr. Davis recalls, noting that SAS’s big corporate customers, like banks and insurance companies, had been mining huge amounts of data for decades.

From New York Times Aug. 11, 2012

On the Colbricon Massif, in the upper Cismon Valley, the Austrians had been mining toward Italian advanced positions.

From The Story of the Great War, Volume VI (of VIII) History of the European War from Official Sources by Reynolds, Francis J. (Francis Joseph)