Hanford workers were told to stay home Thursday because of hazardous weather conditions.
They were dismissed early Wednesday.
Because most work four 10-hour days Monday through Friday, many will be off until Monday.
Essential employees will report to work Thursday through Sunday.
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Energy Northwest had a two hour delay Thursday.
Pacific Northwest National Laboratory nonessential workers in Richland were told not to come in until 10 a.m., but could work remotely at home before then.