Already under scrutiny after two deadly crashes of its 737 Max 8 aircraft, Boeing took an additional hit Saturday when a front page story in The New York Times detailed alleged negligence at a South Carolina factory that makes another of Boeing's jets.

The Times report says Boeing "often valued production speed over quality" and that workers at the plant have routinely left metal shavings, tools and other potentially hazardous debris near electrical wiring in planes coming off the assembly line.

The factory makes Boeing's 787 Dreamliner aircraft.

Boeing has also ignored employee complaints about the issues, says the report, which relies on interviews with current and former employees, along with corporate documents, internal emails and federal records.

In one instance, workers found a ladder left behind in the tail of a plane, which could have locked up the gears of the horizontal stabilizer, a former Boeing technician told the paper.

Boeing didn't immediately provide CNET with a comment on the report, but a company representative told the Times that the South Carolina factory is "producing the highest levels of quality" in the company's history.

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