On Mon May 03 20:31:08 PDT 2010, Daunya said:
Dig down to the switch directly below the plant, on the second level. Only flip this switch for the third block. Any other blocks you switch to collect items on the way, put back in the original position. For the forth block, dig all the way to the bottom, work your way to the right and back up through the middle. (Do not take the transporter.) As you are coming up through the middle from bottom to top, the second switch you come to will drop the forth block when you flip it, if you have left all the rest in their original positions. (except for the ones you need to flip to actually drop boxes.) Now all of the doors are open and you can collect everything. Remember, the key is to put any flipped switches back in thier original positions, except for the ones that actually cause the blocks to fall.