The World's Tallest Twisting Atrium - Indesignlive.hkIndesignlive.hk:
Caterpillar D4 in Santee swamp.
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The Forest History Society has added a photo to the pool:
[image: Caterpillar D4 in Santee swamp.]
*Caption:* Caterpillar Diesel D4 Tractor skidding gum,...