We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember mike saying
something like:

Is it really more economical for them to pay to have it dumped than to
take it to the next job?

Overall, probably. Somebody would have to be paid to keep an eye on
what's going into it and sorting it out and keeping it clean and making
sure it was kept aside undamaged, then arranging for it to be used.
Too much hassle, for the majority of materials.