A   Acute poisoning:It results from a single exposure to a heavy concentration of a toxic substance C   Chronic poisoning: It is the result of repeated exposures to smaller concentrations. E   Environmental Control: It includes methods of preventing the inhalation of hazardously air contaminated in the workplace. I Industrial Hygiene: It is set of procedures which are conducted by the Industrial Hygiene to prevent, evaluate, and control short-term or acute exposures, and toxic substances in the workplace for preserving the health of employees.  Industrial Toxicology: It deals with the poisonous or toxic properties of substances arisen from the workplace in a plant L   Local Exhaust Ventilation: It is removing the contaminant or heavily contaminated air from a place as close to the point of operation as possible. R   Related Effects of Noise: It is the process of identifying a nose in terms of its sound level. S Substitution:  with less Toxic materials It is the decision taken by management to replace the currently used material(s) by a safe material   V   Vibration: It is the transmittal of energy to the human body, usually by contact with a surface or system that is in oscillatory motion.