A Cornishman Addresses His Metal   You riddler of the landscape, erector of engine houses, you currency of now redundant stannery towns, you oxidised element from Group Fourteen co-habiter with germanium and lead. You has-been. You with your Great Flat Lodes, your well-buried seams.   You counterfeit silver, you soft, worthless bender. You, who can’t stand up on your own, pimping yourself with pewter, alloyed with copper. You gave us work and took our lives. You inhabiter of granite, you lurker, you luck-deliverer, you with your Knockers.   You elude us in mines that cave in, collapse, flood with the…