Occam's Razor says dig here

As an author, you have to make informed decisions on when to draw the plot out or when to take shortcuts to get to the next piece of the action. Surely, I could have placed the Darwin Virus Strain 5 canister anywhere in the world but then why would Rome, Rei and Ursay be wasting their time in Batavia, Illinois during this section of The Ark Lords? I decided to just make Rei have a flash of brilliance so that we could get on with the story and not just present you with a travelogue:

     Rei walked over and picked the canister up. It was surprisingly light. Well, maybe not surprising since it was really almost just an aluminum balloon. He held it up to the light, looking at the top and bottom.
     “How are we going to find that?” Rome asked. “It’s so small and the Tevatron is so large!”
     Ursay motioned for Rei to hand it over to him which Rei did.
     Rei turned to face the front of the ship. “You have to remember Project Darwin’s goals,” he said. “They had to make it secure but not so hard to find if the people looking for it really needed it. So I’m guessing they put it somewhere under the main hall or maybe in a collection tube.”
     He stopped for a moment and looked up at the ceiling. “It was called Wilson Hall, I think,” he said. “It was built out of concrete. Too much to haul away. So when your people bulldozed it, that’s what made the hill we just walked up. And since they put up Hanry Ta Jihn’s gravestone at the top, I’m guessing he died down below. So Occam’s Razor says we start here, under this giant mound of dirt.”
     “What is Occam’s Razor?” Rome asked.
     Rei shrugged. “It means the simplest solution is probably the right solution. Why introduce complexity when you don’t need to?”
     “Well, in that case, this is as good a place as any,” Rome said. “But you still didn’t tell me how we’re going to dig down to find it.”
     A broad smile crossed Rei’s face. “We aren’t going to dig for it,” he said. “But I know some ladies who will be able to get us into the building.”

Whatever could he mean? I'll tell you. The weaponized VIRUS units. They will dig and dig until they are told to stop. They would be a lot more gentle that just blasting the rubble with MINIMCOM's roadgrader cannons.