This is Bob

Bob is the hardest working member of our Nuclear crew. Mostly he is working hard on retiring in a couple more years.
When not working his buns off, Bob plays endless games of chess and drills us on the energy levels of different radioactive elements.
Bob is a one-man travelogue: if there is a place, he has been there. Except for the Virgin Valley and the Paradise Mine in Nevada, where he must go to mine some black opals.
Bob is the man!