they sent oxygen sensors, cameras, and microphones down through pvc pipe, fishing in each hole, searching every possible area for the men. oxygen levels were misread and ultimately determined to be dangerously low. three rescue workers trying to dig the trapped miners out were also killed when a wall of the mine exploded, crushing them. they never saw or heard any sign of the miners, and all six men were considered missing and presumed dead. all rescue efforts were eventually abandoned. they just switched off the drills and unplugged their ears.

빨간색 부분이 해석이 안되서 그러는데요...ㅠ
뭐.. 정확히는 해석이 안된다기 보다는;;
해석이 되긴 되는데;;.. 이상하달까;;;
아무튼 해석 부탁드립니다!