Mining is defined as all activities related to excavating rocks, stones, or minerals that can be sold at a profit. In a more general sense, it also includes the subsequent extraction of valuable metals. The adsorption test conducted on cadmium with tailings as adsorbent showed a very good removal efficiency of 98 %. The co efficient of isotherms Amax and k and the value of n<1 shows the high affinity and favourable conditions for adsorption. Sieve analysis and shear strength test shows the tailing is not completely sandy. The concrete blocks prepared with tailings failed to achieve the expected strength since it contained some amount of clay and silt which hinders the solidification process and hydration of concrete. The addition of fly ash (acted as pozzolanic material) increased the strength markedly since fly ash arrests alkali-aggregate reaction and acts as a pozzolanic material in binding the aggregates with cement. This combination can be used for high strength concrete. Hence Usage of tailings and fly ash to construct concrete blocks proves to be economical.