Cost accounting takes into consideration all macro and micro details that contributed to the production of one ton of steel. The cost of one ton of steel would thus include, the salary of the foreman that was involved in (proportion) in production of one tone of steel. Similarly, electricity, workman's salary, iron, power, coke and factory premise cost, machinery cost, which were involved in the production of one ton of steel are used in cost accounting to define the unit cost of one ton of steel.