| http://www.w3.org/ns/prov#value | - In the days and weeks following Sago, we heard from dozens of small manufacturers, professional designers, and back-yard tinkerers with all kinds of ideas to improve communication and tracking of underground miners.* We invited all of them to present their ideas and display their technology at a symposium held in April 2006 in Wheeling, WV. It was really inspiring to see all these interesting inve
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