Dead wrong. "Per ton" is by weight. By volume, it's less than 2%.
Meaning, a tractor trailer that holds 20 tons of pure plastic -- if it was to be stuffed with raggertail, the amount of metal would by volume only take up the space of say a coffin.
Metal is very heavy. Around 16 to 1 ratio for HDPE plastic boxes. Meaning, a 50-50 mix by weight of steel and plastic would only be 6.25% metal by volume. And NYSE: RKT's plastic is LDPE so the ratio is likely much larger. I'm guessing 2%.
If you actually look at raggertail, the metal component, though heavy by weight, actually takes up very little space by volume. It's a thin wire surrounded by very thick (wide) amounts of plastic.