An explosion on Wednesday in a coal mine in northern Mexico killed seven miners, officials said, highlighting lax safety conditions in small mines that are often poorly regulated.
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Links:
[1] http://admin.indiaenvironmentportal.org.in/news/seven-coal-miners-dead-after-explosion-northern-mexico
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/reuters
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/coal
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining-accident
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mexico
