We think that someone, a customer, was disposing of a mercury-containing substance into the system. It has nothing to do with plant's design or operation.

All it takes is someone to dump mercury down the toilet, and I've got this problem again.

You know, back when I did the Mercury flight,

We took a look at dentists' offices and industrial customers and sampled at strategic locations. It's hard to know exactly where it comes from. We went business to business in certain areas, asked them if they use mercury compounds and told them they can't dispose of it down the sewer.

Our lakes and rivers are already contaminated with mercury. We need to reduce emissions, not add to them.

The great thing about some of these pieces is that they are all unique. The particular statue is mercury and this is made of lead.