(Bloomberg) -- More than 300 wildfires in British Columbiahave forced Canadian lumber mills to shut as hot, dry weathersparked blazes across swaths of western Canada and the U.S.

Norbord Inc., the largest North American producer of orientedstrand board used in residential construction, suspended productionat its mill in 100 Mile House in central B.C. but stressed that,for now, the mill is safe.

Related: Business interruption insurance: Protecting dreams[infographic]

“We were in a zone that got evacuated Sunday night so we shutthe mill down and that continues to be the situation,” NorbordChief Financial Officer Robin Lampard said by phone Tuesdaymorning. The Toronto-based company has 440 million square feet ofannual production capacity. It hasn’t disclosed the cost per day ofthe shutdown, Lampard said.

Canfor Corp.’s operations aren’t directly affected by thewildfires, spokeswoman Corinne Stavness said in an email Tuesday.Interfor Corp. couldn’t be immediately reached for comment.

On Monday, West Fraser Timber Co., one of Canada’s largestlumber producers backed by billionaire Jim Pattison, said it shutthree locations in B.C. — 100 Mile House, Williams Lake andChasm.

West Fraser said it’s uncertain how long the operations will besuspended and is unable to assess the impact on lumber and plywoodproduction. The facilities represent annual production capacity of800 million board feet of lumber and 270 million square feet ofplywood.

The company couldn’t be immediately reached early Tuesday.

Evacuations across California, Colorado and B.C.

West Fraser declined 0.3% to C$60.47 at 10:16 a.m. in Torontotrading, while Norbord and Canfor were both down 0.1% and InterforCorp. fell 0.7%.

Related: 4 steps to help clients' businesses survive acatastrophic event

Also on Monday, Kinder Morgan Inc. said its Trans Mountain crudepipeline is still operating but the blazes were in the “vicinity.”A spokesman for Kinder Morgan wasn’t immediately available onTuesday to update the situation.

Wildfires have swept across the western U.S. and Canada, forcingthousands of evacuations across California, Colorado and B.C., andprompting military personnel to mobilize on both sides of theborder to help battle the flames.

Oil pipeline

B.C. declared its first state of emergency in 14 years over theweekend. As of midnight Monday, 332 fires larger than 0.1 hectareswere burning in the province, according to the BC Wildfire Service.More than 14,000 people have been evacuated in the Pacific Coastprovince, according to broadcaster CBC.

Some of the worst fires have been raging in the province’scentral region, an area that’s home to mining, forestry andranching. Kinder Morgan’s pipeline, which carries 300,000 barrels aday of crude oil and refined fuels from neighboring Alberta to theVancouver area for export to the U.S., also passes through theregion.

Related: Is climate change affecting insuranceclaims?

Kinder Morgan said in an email Monday that it’s “monitoring thearea and taking preventative measures to ensure the safety of ouroperations.”

Last year, wildfires five times the size of New York Cityswept through Alberta’s Fort McMurray, thegateway to the world’s third-largest oil reserves, forcing about80,000 people out of their homes. Those blazes curtailed more thana million barrels of daily crude output as companies includingSuncor Energy Inc., ConocoPhillips and Royal Dutch Shell Plc cutproduction.

Major mines

So far, no major mines appear to have had their output impacted.Vancouver-based Taseko Mines Ltd. — operator of Canada’ssecond-biggest open-pit copper mine in B.C.’s Cariboo region whereseven major fires are currently burning — said Monday thatsome of its workers have been personally affected by the fires butthat the Gibraltar mine continues to operate normally.

Teck Resources Ltd.’s Highland Valley copper mine lies justsouth of a major fire reported by the B.C. Wildfire Service atAshcroft Reserve. “We are closely monitoring the situation and atthis time we do not anticipate an impact on mining operations,”spokesman Chad Pederson said in an email Monday. “No other Teckoperation is affected by wildfires at this time.”

Related: Wildfires: An expanding threat?

Copper Mountain Mining Corp., which has a mine 20 kilometers (12miles) south of Princeton, B.C., briefly lost power due to a linebeing downed but is operating normally, Dan Gibbons, a spokesman,said by phone. First-aid personnel from the company have been sentto Princeton to help the evacuation center there, he added. CopperMountain is the only miner in B.C. to have reported an impact as ofMonday, according to the Ministry of Energy and Mines.

Local fire officials in Arizona, Colorado, California and Nevadasaid Monday that they didn’t know of any mines affected by thefires. Company spokesmen for Barrick Gold Corp. and Newmont MiningCorp. said mining operations in Nevada had been unaffected.

Copyright 2018 Bloomberg. All rightsreserved. This material may not be published, broadcast, rewritten,or redistributed.