Author:Basson, FA; Jammine, E; Heyl, LDate:1984A research and demonstration project on the use and performance of low cost integral solar water heaters in urban low-income dwellings was carried out in 1982/83. The project involved technical and socio-economic components. This report ...Read more
Author:Heyl, L; Von Maltitz, Graham P; Evans, J; Segoale, RDate:2000The softwood sawmilling industry processes approximately 4.1 million m3 of pine logs every year. Small-scale sawmillers which account for 67% of the total number of establishments process only about 11% of the annual log intake. The major ...Read more