Raw materials can be developed in a number of ways. The first is the classic, large-scale mining, which is usually practiced by multinationals. On the other hand, there are also more small-scale, artisanal forms of mining. CATAPA works primarily on large-scale traditional mining techniques, as they have the greatest impact on people and the environment. The classic mining techniques can be divided into two categories: "surface mining" and "underground mining". Depending on the type of ore and where it's found in the soil they use the surface or underground mining techniques.