Isn't the mercury produced by cement manufacturing a more urgent issue than its CO2 output? CO2 is being attacked on many large-scale fronts, but last I checke

Isn't the mercury produced by cement manufacturing a more urgent issue than its CO2 output? CO2 is being attacked on many large-scale fronts, but last I checked the mercury in the oceans rendering seafood unsafe to eat was largely put there by the cement industry.