Abstract:
IMixture of plaster of Paris and China claYI slaked lime yield an important
product, which is widely used in almost all educational institutions for writing,
over blackboard. From primary education to universities, chalks are required in,
most educational institution and have been for a long time regarded as an;
integral part of educational system. The same is the case in Laos. However, Laos
imports chalks for most of its schools and colleges. This business is very simple
landvery rewarding. Hence this project has been proposed.
