Clearing bush to make way for Kariba Dam.
Title reads: "New Methods to Clear Bush".
Kariba Dam, Rhodesia (now Zimbabwe / Zambia).
L/S large metal balls attached to chains spread out across scrub land. M/S bulldozer which pulls the balls along. G/V workmen laying the chains. C/U chains moving along the ground. L/S balls and chains being pulled along ground uprooting bushes in their path. C/U ball moving into bushes. C/U small tree being uprooted. G/V tree being uprooted and crashing to the ground. M/S ball moving into bushes and dragging them out of the ground. G/V cleared area. G/V "treedozer" (large bulldozer) pushing over large tree. C/U tree being rolled clear by the 'dozer. G/V cleared area.