· Stone crushing industry is an important industry sector in the country ged in enga producing crushed stone of various sizes depending upon the requirement which act as raw material for various construction activities such as road construction, bridges, highways among others. The stone crushing plant employs many people both skilled and unskilled who are involved in the entire process .
· Types of Construction Materials. Buildings can be egorized into five different types of construction: fireresistive, noncombustible, ordinary, heavy timber, and woodframed. Based on the construction types, there are various materials used in the construction of buildings.