"We'll check from this end on schedules. We need the blocks, and if the wait is too long, we'll send the Relay Girl in for 'em."
Don hung up and then said: "Glass ones might be a good idea. We can check the transmission characteristics optically. I think we can check more, quickly, than by running analysis on steel."
"Plus the fact that you can get the blocks back after test," grinned Walt. "Once you tear into a steel block to check its insides, you've lost your sample. I don't know any other way to check the homogeneity than by optical tests."
"O.K. Well, four days for glass will do better than a couple of months on steel blocks."
"Right. Now let's look up Wes and see what he's come up with."
They found Farrell in one of the blister laboratories, working on a small edition of the power-transmission tubes. He was not dressed in spacesuit, and so they entered the blister and watched him work.
