May 28, 2002--southeast corner outside Olin: Broken concrete block and glass are conveyed from Level A to the Olin courtyard.

May 28, 2002--southeast corner outside Olin: A mini-excavator scoops up the debris from the conveyor belt and carries it outside of the Olin overhang to a dump bin.

May 28, 2002--east side of Olin, near entrance: As part of the expansion of Olin, additional support and airshafts are needed. To provide the support, four steel piles (one shown in foreground) are placed seven feet apart, sunk two feet in bedrock, then secured with lattice work, and braced with a concrete wall.

May 28, 2002--southeast corner outside Olin: A high tail rig drills out a hole for the piles by first using a screw-shaped bit. A laborer watches closely and signals information to the drilling rig operator.

May 28, 2002--southeast corner outside Olin: After the drill hits shale, a different drill bit is used. The rock drilling bit, a hollow cylinder with teeth on the bottom edge, digs two feet of rock out of the hole. A worker sprays water into the bit to empty the rock and dirt brought up by the drill.

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