[Cobra64]

Lighting fixtures. When I first started buying steel from the mills, I changed our purchase orders to include a "Mercury Clause," whuich stated that there would be ZERO mercury content in their steel shipments to us.

This was due to contracts we had with Electric Boat. Hg and nuclear fuel are not good playmates in submarines. Speculation is this is why the Thresher went down in the 1960s.

[grey_whiskers]

This was due to contracts we had with Electric Boat. Hg and nuclear fuel are not good playmates in submarines. Speculation is this is why the Thresher went down in the 1960s.

Don't answer if you're not allowed to, but does the mercury act to regulate the neutrons' speed in such a way that it maximizes the fission cross section?