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Energy Revolution: a Giant Hole 220 Meters Deep Is Going to Change the World

Summary by OKDIARIO
In recent years, several energy companies have been interested in a gigantic iron extraction hole located in the small town of Marmora, Ontario, Canada. Nearly 220 meters deep, 740 meters long and 450 meters wide, Northland Power in collaboration with Ontario Power Generation seeks to reuse the mine as a closed circuit hydroelectric energy storage system, complemented by a small solar park, creating a clean energy center capable of generating 40…

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Energy Revolution: a Giant Hole 220 Meters Deep Is Going to Change the World

In recent years, several energy companies have been interested in a gigantic iron extraction hole located in the small town of Marmora, Ontario, Canada. Nearly 220 meters deep, 740 meters long and 450 meters wide, Northland Power in collaboration with Ontario Power Generation seeks to reuse the mine as a closed circuit hydroelectric energy storage system, complemented by a small solar park, creating a clean energy center capable of generating 40…

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OKDIARIO broke the news in on Sunday, January 18, 2026.
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