Well my understanding of the whole thing was A] There was no market driven demand even for dog food because the supply was to sparodic, and the fish were not fit for human consumption, but not because of antibiotics or other meds, they were just plain rough from being in the ponds for so long and thus buried above Mossyrock. and
B] There was policy in place at the time that marketing fish from a state run hatchery was not in the best intrest of public relations. Most of the steelhead (nates) were returned to the river if they were not used but this was considered sound management by keeping as much genetic genetic diversity in the river as possible
I will clarify that in the early '90's I worked for the Dept. of Fisheries as a diver at cowlitz under Paul Peterson, Cowlitz fisherman may remember him. as I was on the diving safety board for the dept I didi do a little traveling to other programs and the modus operandi was the same at those facilities. in 1994-96 I worked for John Aukerman on the engineering side out of Lacey and got to travel all over the state to many different programs (as a construction laborer mind you) and had the opportunity to talk with a lot of peaple about a lot of these issues (spelling was obviously not a topic), And above all else That was a long time ago and as I implied before my deeds tend to have a rosier tint to them the farther back I look ;-)