Don’t slam dams After reading Roger Wheeler’s OpEd in the Jan. 9 Bangor Daily News entitled “Dams killing Gulf of Maine fishery,” I find it necessary to comment. His contention that silica is required for the healthy growth of marine life may be correct but the headline and statements that dams, particularly hydroelectric dams, are killing Gulf of Maine fisheries is completely baseless. For starters, dams do not hold back silica from entering our waterways and oceans.