Circuit boards and electronics are not classified as hazardous to my landfill first of all. Between the yoke, transformers, degausing cable and wiring i average well over 3 pounds per crt. Are you pulling the transformers and visible copper items off the boards? On tvs the power cord and wiring alone is gonna be a couple pounds. You might also be missing the degaussing cable, they are usually about 1/2 pound.