 The US Department of Energy is hugely important to us for a number of reasons, not least of which they provide funding for a lot of our activities. But they also provide one of their operatives on a permanent basis, or rotational, but two years rotation working in our offices. So I actually have somebody alongside of me that I can turn to at any given time during the working day for their experts, the US Department of Energy's expertise on hand. ac mae'n ddweud beth. Felly, mae'n ddweud i'r ddweud y dyfodol yma yn gweithio'r ddweud o'r ddweud ei ddweud o'r ddweud yma, i'r ddweud i ddweud i'r ddweud a'r ddweud o'r ddweud o'r ddweud o'r ddweud o'r ddweud.