2.1 Describe and comment on the process/es which apply when materials and/or equipment can be salvaged in a mining company. 2.2 Identify five (5) types of materials and/or equipment that can be salvaged in a mining company and explain briefly how each of the identified items can be reporpused. 2.3 Make five (5) recommendations for improving the processes described in (2.1). 2.4 A company manufactures product A which is made up of one unit of B, and half a unit of C. Each unit of B is made up of one unit of D, two units of E, and one unit of F. Each unit of C needs half a unit of G and three units of H. All these parts have 20 units in stock. It is required to make 100 units of A. Draw up a product structure tree