Interesting information. I didn't think of the use for adding weight.

I don't think the issue of environmental concern is that great in this case as the chips are sealed permenently into little bottles shaped like slot machines. In fact that may be one of the reasons that they are permenently sealed. To prevent people from exposure to the lead? Also, there are labels that specifically mention not eating the fragments.

"Not intended for small children"

"DO NOT EAT"

Although I don't know why any "REASONABLE PERSON WOULD WANT TO EAT THEM"

Thank you for your reply,

Bill