Discover the hidden world beneath Grand Rapids with a fascinating look at the secret underground tunnels. From gypsum mines to mysterious passageways linking key locations, delve into the city's rich history and uncover its intriguing subterranean secrets.
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It takes two to three hours for Kevin Villalta to filter and distill a gallon of tap water, and he says the process is as expensive as it is time-consuming.
But it’s worth it, said the Lansing environmental engineer, who works for the Department of Environment, Great Lakes and Energy.