MIT brass rat manufacturing reference

There was another one in Attleboro — not Leach and Garner, another company that made things like the MIT brass rat. They were missing rings. They keep pretty good inventory — they weigh the gold every time it changes hands from one station to another. If somebody's using it here and someone else is using it over there, there's paperwork and a weighing to make sure no one skimmed some off. There are tolerances on all this. But they were missing whole rings. They found out that a little stream runs right through the middle of Attleboro. People were throwing rings out the windows, and on weekends they'd go dive for gold in the river. So the company bought the mineral rights from the town of Attleboro so they could police the river. If you were doing a little diving in the river over the weekend, they could come up and check you, because they owned the mineral rights.