Ecological contamination is a distressing issue at the present. It deals with every aspect of our life including birth to death. The problem is not from a pinpoint source; rather it is a wide problem which contains many more aspects beyond our imagination in air, water, land etc. Many types of health hazard are in our surroundings and they gradually exposed to us. Occupational exposure to harmful substance is a very important human health hazard Industrial empowerment worsts the problem. Check on polluting industries in Dindigul District at Kulathur. A person cannot avoid this type of health hazard. Foundry industry is strongly set at Kulathur and as such polluting the area and affect the life of nearby living persons and workers. Iron is the world's most commonly used metal and can usually be found with other elements in the form of steel. The frequently recorded health disorders between iron and steel industry workers includes: respiratory and skin problems as well as noise-related hearing impairment. An assessment has been done for the occupational hazard at iron foundry through haemoglobin concentration and total erythrocyte count. A decrement in total erythrocyte count (TLC) different Leukocyte count (DLC) and haemoglobin concentration (Hb conc.) has been found in foundry workers which is alarming to take rehabilitate steps.