07/10/2013
https://congress.gov...
"So if we're projecting into the future past 2025 and further, we know more of the international community is getting involved and thinking about space exploration as we go into deeper and deeper space..."
"But it wouldn't make sense I think if we're going to deeper space not to have that ability to collect and communicate."
"And it's reasonable to assume that there are no other countries currently capable of producing Pu-238 that we know about?"
"We currently have 35 kilograms of Pu-238. Is that our current stockpile, Mr. Schurr?"