Coal Mining's Environmental Impact | From The Ashes National Geographic 2:54 7 years ago 364 179 Скачать Далее
How Coal Is Mined and Refined - Top Coal Mining Spots in the World - Documentaries Documentaries 44:00 6 years ago 103 670 Скачать Далее
Everything to Know About Coal (in Under 3 Minutes) Union of Concerned Scientists 2:36 6 years ago 45 238 Скачать Далее
What is Coal - More Science on the Learning Videos Channel Harmony Square - Educational Videos & Activities 3:35 4 years ago 86 966 Скачать Далее
Documentary on COAL: Mining, History and Future Outlook Commodity Culture 15:53 3 years ago 57 239 Скачать Далее