特索罗已请求罚金。
The Tesoro refinery in nearby Mandan is likewise benefiting from the boom in the west.
曼丹附近的特索罗石油提炼厂也将从犹他州西部有蓬勃发展受益。
Tesoro spokesman Mike Marcy told The Times it is working with all the investigating agencies.
特索罗发言人麦克马西告诉泰晤士报公司与所有的调查机构配合。
The Seattle Times said San Antonio-based Tesoro revealed the investigation in a quarterly earnings report filed late last week.
西雅图时报说以圣安东尼奥为总部的特索罗透露调查了本季度的收益报告文件在上星期晚些。
Tesoro, an American refiner, scrapped one scheme last year because of rising costs. Kuwait's national oil company has delayed another for the same reason.
去年，生产成本不断增加，美国炼油企业Tesoro被迫放弃了一项生产计划，科威特国家石油公司也不得不将其计划一推再推。
The agency said Tesoro failed to check for cracks that had developed in a nearly 40-year-old heat exchanger that blew apart and killed seven workers at the refinery about 70 miles north of Seattle.
机构说特索罗没能检查裂缝，使几乎40岁的热交换器爆炸并且杀死七工人在西雅图的北方该精炼厂大约70英里。
The agency said Tesoro failed to check for cracks that had developed in a nearly 40-year-old heat exchanger that blew apart and killed seven workers at the refinery about 70 miles north of Seattle.
机构说特索罗没能检查裂缝，使几乎40岁的热交换器爆炸并且杀死七工人在西雅图的北方该精炼厂大约70英里。
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