Rene Daniel Haller
A Swiss agronomist, Mr. Haller planned and carried out for the Bamburi Portland Cement Company the rehabilitation of their strip-mined coral limestone quarries in Kenya.
To date 200 hectares of quarry wasteland have been transformed into a thriving self-sustaining and economically viable ecosystem with a vast variety of wildlife. Over 150 species of indigenous trees are succeeding the original timber monoculture.
His work is a model not only in greening of industrial wasteland but also in demonstrating that man-made ecosystems can be economically viable. The old quarry has become a major attraction with over 87,000 registered visitors in 1991.