Brick Industry in China (Part two)
At the same time, new wall materials, including all kinds of masonry materials and slabs which use less or no clay, should be developed. According to the develop ment strategy set by the former State Bureau of Building Materials Industries, the proportion of new wall materials should reach 40 per cent, and 60 per cent in the years 2010, and 2030 respectively. and red in a continuous kiln called Bull ‘s Trench Kiln. All the operations are labour-intensive and typically, each enterprise employs 100 to 200 labourers. The ndustry provides seasonal employment to more than 5 million workers. These traditional enterprises have shown tough resistance to any change in technology and work organisation.