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Almost two weeks passed and several nearly successful attempts were also made but to no avail. It was then that a 12-member team of rat-hole mining experts was called in for manual drilling

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Uttarakhand ,Uttaranchal ,India ,Munna Qureshi , ,Vakeel Hassan ,Delhi Jal Board ,Uttarakhand Tunnel Collapse ,Rat Hole Mining ,Yearender 2023 ,

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