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Pristine alpine lake contaminated by dust from mountaintop coal mines, study shows

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New Alberta government research has found windblown dust from mountaintop removal coal mines has polluted a pristine alpine lake to the point where its waters are as contaminated as lakes downwind from the oilsands.

The paper, published last week in the journal Environmental Science and Technology, concludes that it’s crucial to consider more than just downstream effects from such mines.

“It is highly likely that our findings … extend to other mountaintop mining operations with large fugitive dust emissions,” the paper says. “Permitting of existing mines and approval of new mines should consider and have mitigation plans for broader atmospheric impacts.”

The paper, written by two senior scientists in Alberta Environment and Protected Areas, comes as the province’s United Conservative government ponders whether to retain a ministerial order protecting Alberta’s Rocky Mountains from proposed mines that would remove summits to create open pits and expose coal seams.

The province’s new energy minister, Peter Guthrie, has not responded to questions from The Canadian Press on the issue.

The paper examines Window Mountain Lake, a small, remote alpine lake in southern Alberta accessible only on foot just across the continental divide from coal mines in British Columbia’s Elk Valley. The lake is unconnected to the coal-mining area by any water body, nor does it have coal deposits.

The scientists took a sediment sample from the lake that contains layers from before 1850.

They analyzed the layers for chemicals associated with coal, such as polycyclic aromatic compounds and selenium. The former are known carcinogens and the latter is toxic to fish.

They found the carcinogens were stable until the industrial era. Coal mining in the Elk Valley began around 1900, and by 1970, levels of those chemicals had quintupled.

The pace of contamination quickened after 1970, when aboveground mining in the Elk Valley began. Polycyclic aromatic compounds doubled in concentration in Window Lake every 10 to 15 years after that.

During the past decade, those compounds reached 30 times pre-industrial levels. Some now exceed Canadian guidelines for the protection of aquatic life.

“(Contamination levels) of surface sediments of otherwise pristine Window Mountain Lake are equivalent to or exceed those observed in lakes downwind of the Canadian oilsands, the world’s largest collection of open-pit petrochemical mines,” the paper says.

The researchers compared the compounds found in the lake sediments to similar ones generated by wildfires and from the Elk Valley mines. Those from the lake sediments matched those from the mines.

A similar pattern was found for selenium. Levels of the compound roughly doubled from pre-industrial levels by the mid-1980s, as did the rate of deposition.

Alberta Environment did not make the authors available for an interview.

But Bill Donahue, a former chief of environmental monitoring for the department who has seen the study, said it shows mountaintop mining affects more than the rivers and streams that flow from it and has impacts that cross watersheds.

“You couldn’t ask for more clear results or cleaner results,” he said.

“Everywhere there’s mining, especially mountaintop mining, you can expect to see transport of these substances long distances. It clearly describes and demonstrates coal mining is environmentally destructive any way you cut it.”

Donahue points out the study didn’t even look for toxic heavy metals such as mercury, also commonly associated with coal deposits.

Emily Bernhardt, a prominent ecologist at Duke University in North Carolina who has published extensively on mountaintop coal mining, called the new research both groundbreaking and convincing.

“The only way that these contaminants could have made it into the lake is through atmospheric deposition,” she wrote in an email.

She said the research builds on and confirms what has been found in other papers — that mountaintop coal mining spreads contaminants beyond mine sites.

“This paper suggests that contaminant laden dust is yet another way in which surface coal mine pollution is blown and deposited across large regions. Pollution does not respect permit boundaries and the amount of pollution in a region increases with the total extent of mining.”

This report by The Canadian Press was first published Nov. 3, 2022.

— Follow Bob Weber on Twitter at @row1960

 

Bob Weber, The Canadian Press

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A timeline of events in the bread price-fixing scandal

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Almost seven years since news broke of an alleged conspiracy to fix the price of packaged bread across Canada, the saga isn’t over: the Competition Bureau continues to investigate the companies that may have been involved, and two class-action lawsuits continue to work their way through the courts.

Here’s a timeline of key events in the bread price-fixing case.

Oct. 31, 2017: The Competition Bureau says it’s investigating allegations of bread price-fixing and that it was granted search warrants in the case. Several grocers confirm they are co-operating in the probe.

Dec. 19, 2017: Loblaw and George Weston say they participated in an “industry-wide price-fixing arrangement” to raise the price of packaged bread. The companies say they have been co-operating in the Competition Bureau’s investigation since March 2015, when they self-reported to the bureau upon discovering anti-competitive behaviour, and are receiving immunity from prosecution. They announce they are offering $25 gift cards to customers amid the ongoing investigation into alleged bread price-fixing.

Jan. 31, 2018: In court documents, the Competition Bureau says at least $1.50 was added to the price of a loaf of bread between about 2001 and 2016.

Dec. 20, 2019: A class-action lawsuit in a Quebec court against multiple grocers and food companies is certified against a number of companies allegedly involved in bread price-fixing, including Loblaw, George Weston, Metro, Sobeys, Walmart Canada, Canada Bread and Giant Tiger (which have all denied involvement, except for Loblaw and George Weston, which later settled with the plaintiffs).

Dec. 31, 2021: A class-action lawsuit in an Ontario court covering all Canadian residents except those in Quebec who bought packaged bread from a company named in the suit is certified against roughly the same group of companies.

June 21, 2023: Bakery giant Canada Bread Co. is fined $50 million after pleading guilty to four counts of price-fixing under the Competition Act as part of the Competition Bureau’s ongoing investigation.

Oct. 25 2023: Canada Bread files a statement of defence in the Ontario class action denying participating in the alleged conspiracy and saying any anti-competitive behaviour it participated in was at the direction and to the benefit of its then-majority owner Maple Leaf Foods, which is not a defendant in the case (neither is its current owner Grupo Bimbo). Maple Leaf calls Canada Bread’s accusations “baseless.”

Dec. 20, 2023: Metro files new documents in the Ontario class action accusing Loblaw and its parent company George Weston of conspiring to implicate it in the alleged scheme, denying involvement. Sobeys has made a similar claim. The two companies deny the allegations.

July 25, 2024: Loblaw and George Weston say they agreed to pay a combined $500 million to settle both the Ontario and Quebec class-action lawsuits. Loblaw’s share of the settlement includes a $96-million credit for the gift cards it gave out years earlier.

Sept. 12, 2024: Canada Bread files new documents in Ontario court as part of the class action, claiming Maple Leaf used it as a “shield” to avoid liability in the alleged scheme. Maple Leaf was a majority shareholder of Canada Bread until 2014, and the company claims it’s liable for any price-fixing activity. Maple Leaf refutes the claims.

This report by The Canadian Press was first published Sept. 19, 2024.

Companies in this story: (TSX:L, TSX:MFI, TSX:MRU, TSX:EMP.A, TSX:WN)

The Canadian Press. All rights reserved.



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S&P/TSX composite up more than 250 points, U.S. stock markets also higher

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TORONTO – Canada’s main stock index was up more than 250 points in late-morning trading, led by strength in the base metal and technology sectors, while U.S. stock markets also charged higher.

The S&P/TSX composite index was up 254.62 points at 23,847.22.

In New York, the Dow Jones industrial average was up 432.77 points at 41,935.87. The S&P 500 index was up 96.38 points at 5,714.64, while the Nasdaq composite was up 486.12 points at 18,059.42.

The Canadian dollar traded for 73.68 cents US compared with 73.58 cents US on Thursday.

The November crude oil contract was up 89 cents at US$70.77 per barrel and the October natural gas contract was down a penny at US2.27 per mmBTU.

The December gold contract was up US$9.40 at US$2,608.00 an ounce and the December copper contract was up four cents at US$4.33 a pound.

This report by The Canadian Press was first published Sept. 19, 2024.

Companies in this story: (TSX:GSPTSE, TSX:CADUSD)

The Canadian Press. All rights reserved.



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Quebec premier calls on Bloc Québécois to help topple Trudeau government next week

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MONTREAL – Quebec Premier François Legault says the Bloc Québécois must vote to topple the federal Liberal government next week and trigger an election.

Legault called on Parti Québécois Leader Paul St-Pierre Plamondon to summon the “courage” to ask the Bloc to support the expected Conservative non-confidence motion against Prime Minister Justin Trudeau’s minority government on Tuesday.

The Bloc and PQ, which both campaign for Quebec independence, are ideologically aligned and have historically worked together.

But moments later Bloc Leader Yves-François Blanchet said on X that he would not vote to topple Trudeau, saying he serves Quebecers “according to my own judgment.”

Legault made the comments after expressing frustration with what he described as Ottawa’s inaction on curbing the number of temporary immigrants in Quebec, especially asylum seekers.

Conservative Leader Pierre Poilievre has said he will put forward a motion of non-confidence in the government on Sept. 24, and specifically challenged NDP Leader Jagmeet Singh to back it.

The Conservatives don’t have enough votes to pass the motion with just one of the Bloc or the NDP.

This report by The Canadian Press was first published Sept. 19, 2024.

The Canadian Press. All rights reserved.



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