"You saved our bacon," Rick stated. "But what really happened?"
"I'm not sure," Scotty replied. "There are two possibilities. One, we sprung a booby trap. I don't really credit that one much, because we were rolling away when the stuff let go. If we'd hit a trip wire or something similar, the dynamite would have gone off right then. So, second possibility, someone was waiting for us. We jumped back just as he pushed the plunger. Or, maybe he saw we had spotted the trap and tried to get us, anyway."
"Who's he?" Rick asked.
"Persons unknown," Scotty answered. "Or maybe one person not unknown."
"Meaning Connel? He could have done it. Suppose he set the trap, then took his jeep up the hill out of sight. Then he could have walked back, fired the shot, hurried back for his jeep, and driven down."
"Could be," Scotty agreed. "Only, did he know we were coming?"
Rick shrugged. "How can we know that? For all we know, from his third shot station he might be able to look right down on the trail. He sees us, hurries into position, fires the charge, and hurries back. We can't really tell until we get to that third station. Personally, I vote for Connel."
"Not proven," Scotty warned.
Rick knew it. "It may never be proven, on account of no witnesses. But suppose it was some unknown party? Why wouldn't that party try for Connel? Why wait until he's passed, and we're coming into position? Would an unknown thief be that interested in us?"
"Too many questions," Scotty objected. "I haven't any answers. But you make a good case for its being Connel. Also, did you notice how he jumped on us for stealing the dynamite? That probably would have been his story if we'd been killed. Now tell me what his motive is. Why should he try to delay the project?"