Rescuers believe it could take at least another two weeks to free miners trapped underground in eastern China, dashing hopes of an imminent retrieval for a group that has already spent 12 days entombed by an explosion.The increasingly desperate attempt to save 21 workers has been further complicated by a massive blockage that has delayed drilling efforts, according to state media.“The obstacles are just too huge, which means we need a least another 15 days or even more to reach the miners,”…

This post was originally published on South China Morning Post.