On our final day in Pittsburgh, we find ourself in a decommissioned coal mine. Just northeast of the city proper, Tour-Ed’s owners run field trips and tours during the warmer months, despite the fact that the mine’s innards run a constant 50 degrees or so, year round. With snow still melted just beyond the entrance, […]...
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CMU team develops a robot and drone system for mine rescues
techcrunch.com