Technology
Urban prospecting detector finds oil in the city

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Artist and electronics hound Jon Cohrs made this tool for urban prospecting. He writes:

The project, called the Urban Prospector, is basically a modified metal detector outfitted with a combustible gas sensor that can be built for under 100 dollars. By scanning the surface of your neighborhood, you will be able to determine pockets of oil and other toxins. Until recently, oil prospecting has been a field left to the professionals because it requires sophisticated tools for detection. But in much the same way gold prospecting empowered people to find small nuggets of profit, urban prospectors now have the potential to find small nuggets of oil near oil spills, abandoned gas stations, and industrial sites. Given the current high cost of oil, these urban spills or potential gold mines are waiting to be tapped.

Check out his Instructable on converting an old metal detector to sense combustible gas.

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Becky Stern is a Content Creator at Autodesk/Instructables, and part time faculty at New York’s School of Visual Arts Products of Design grad program. Making and sharing are her two biggest passions, and she's created hundreds of free online DIY tutorials and videos, mostly about technology and its intersection with crafts. Find her @bekathwia on YouTube/Twitter/Instagram.

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