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Keywords: Ferc-fish ladder.jpg Ferc-fish ladder svg Federal Energy Regulatory Commission FERC Safety Signage for Fish Ladders from an http //www ferc gov/industries/hydropower/safety/signage/symbols/web/symbols htm appendix of symbols to the http //www ferc gov/industries/hydropower/safety/signage/report/Safety_signage htm Safety Signage at Hydropower Projects report PD-USGov Fish-related signs Fish ladder icons |