The flakiness Index is calculated by expressing the weight of flaky particles as a percentage of the total weight of the sample. Elongated Particles These are the particles having length considerably larger than the other two dimensions. OR These are the particles whose one dimension is times greater than the other two dimensions.
Overall, higher concentrations of total EMP were found in mine A, including the highest exposure of particles cm −3, ~ 22 times greater than the REL ( particles cm −3) for EMP. The lowest concentration of total EMP was found in mine F, and the total EMP exposure concentrations for all SEGs in this mine were lower than the NIOSH REL.