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Authors
Jeripotula, Sandeep Kumar
Mangalpady, Aruna
Mandela, Govinda Raj
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Article History
Received: 19 December 2019
Accepted: 5 March 2020
First Online: 13 March 2020
Compliance with Ethical Standards
: The study was approved by the mine management of surface coal mines in India.
: The authors declare that there is no conflict of interest.
