I just checked google translate, and "kupfer" is german for copper.
So yeah, KUPR = Copper is a safe bet.
And Alblaka commented that most current setups will meltdown quickly. . . that seems like a recipe for "Y U MAIK REACTR ASPLODE" spam in the bugs section of the forum, even (especially?) if redstone activates, instead of deactivates, reactors. On the bright side, any amount of idiot-spam we get, the technic pack will get x10. . .
And here's the recipes I can make out from the uploaded schematic (how was that found?):
It looks like 1 uranium + 1 cell = 1 uranium cell, 2 uranium cells + 1 DCP = dual uranium cell , 2 dual uranium cells + 3 DCP = quad uranium cell, I think that 1 cell + either a bucket of water, a bucket of ice, or an ice block becomes some crazy cell; add 4 tin to that to get a cooling cell. 3 cooling cells and 6 tin can become a tri-cooling cell, combine 2 tri-cooling cells, 6 tin, and 1 DCP to get a sexta-cooling cell.
On the top-left, there is an 'o = [electricity]' equation, and in the top middle there is some sort of table combining 'o', a mysterious 'H', and getting a product -- looking at the table, I wonder if there is a relationship between o and H. I can't help but notice for the bit after the equal sign -- 1*1(4/1) = 4, 2*3(4/1) = 12, 3*6(4/3) = 24, and 4*10(4/4) = 40. Hmmm....