开云体育

------ Original Message ------
From: "greenboxmaven via groups.io" <ka2ivy@...>
To: [email protected]
Sent: 3/20/2022 12:35:58 PM
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

I used to think mean cruel mangement was unique to the Syracuse area. A friend went to dental offices asking for their old X-ray photo chemicals. 99% of them not only refused, they were actually furious at him for asking. They insisted on pouring it down the sewer, which did not help our already overloaded treatment plant. The silver residue was very toxic to the bacteria used to digest the sewage. Those of us working in consumer electronics sweatshops didn't fare any better. There would be massive amounts of abandoned equipment in attics and back rooms, yet the shop owners would not allow us to take it home or even buy it. It was always VERY curious that when I went on vacation and returned, they had decided while I was gone was just the time to clean out the junk room. By the late 70s, almost all of us had escaped to far better careers and the sweatshops were out of business.

Bruce Gentry, KA2IVY





They certainly do recycle the copper!

I presented the information to the VP of the company, and
he said no. The etchant tank had a plastic garden hose
fitting at its bottom, so I told him that I was willing
to fill the old carboys, with a garden hose, and even work
for free, as we used at least one carboy per day, which
exceeded my hourly pay... He said no...

I guess he liked pouring money down the drain for some
reason.

-Chuck Harris




Was it possible to recycle the copper removed by these etchants?

Bruce Gentry, KA2IVY




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