In push to supply Tesla, Piedmont Lithium irks North Carolina neighbors Piedmont Lithium's headquarters is seen in Belmont, Gaston County, North Carolina, U.S., July 16, 2021. REUTERS/Ernest Scheyder July 21, 2021 By Ernest Scheyder GASTON COUNTY, N.C. (Reuters) -In its quest to build one of the largest lithium mines in the United States, Piedmont Lithium Inc has overlooked one crucial constituency: its North Carolina neighbors. Piedmont last autumn signed a deal to supply U.S. electric automaker Tesla Inc with lithium sourced from its deposits in North Carolina, sending the company’s sto...