underhand work

underhand work

[′ən·dər‚hand ′wərk]
(mining engineering)
Picking or drilling downward.
References in classic literature ?
He said he admired you 'no end,' and that he wanted you to know it; but he didn't like being mixed up with that sort of underhand work, and he came to you and told tales.
Though the petition was presented at Parliament under the patronage of the Mayor of Norwich, it had not been voted on by the common council in a city assembly, allowing Harsnett to present it as the "underhand work" of a puritan faction (132).
Former Nissan worker John Hepple, who worked as a quality assurance team leader for seven years, told the tribunal: "Myself and colleagues were directed to carry out a lot of underhand work." He claimed staff were encouraged not to return cars to the production line for repairs when faults were flagged up on individual Vehicle History Cards, but to cheat a `weak' system.
By the age of 42, O'Connor had risked and lost everything he had worked for - for the sake of pounds 11,000, the amount he made from his underhand work.