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  • Arizona Daily Star

David Crowe and Claudia Zanes to be honored.

Michael Grijalva says he’s always been mechanically inclined, taking things apart as a kid and fixing cars as he got older.

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Hydraulic fracturing, or "fracking," has led to a boom in U.S. natural gas and oil production, but it remains controversial because of the pot…

Employees of Green Field Energy Services monitor pressure and other fracking data from digital engine controls made by Tucson Embedded Systems…