https://www.9curry.com/answer-keys/7c2a45 BPSC Mining Development Officer Answer Key 2018 Published: April 13, 2018 11:41am | Updated: August 30, 2019 10:30pm by Gajendra Singh Rathore BPSC Mining Development Officer Answer Key 2018: BPSC has issued the Answer Key on 08 Apr 2018 for the exam. Answer Key can be accessed from the link given below. Issued on: 08 Apr 2018