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Master the fundamentals of underground mining with this focused lecture—ideal for geology students, learners, and exam prep! This video breaks down the essentials of underground mining, comparing it with opencast mining and explaining when and why underground methods are chosen: What is underground mining? Discover how minerals are extracted from beneath the earth's surface through tunnels or shafts, targeting deeper ore bodies with reduced environmental and land-use impact. When and why choose underground over opencast? Learn key reasons: — Deeper ore bodies unsuitable for open pits — Environmental and land-use limitations — Safety and economic feasibility in difficult terrain — Lower impact on forests, farmlands, and protected areas Major underground mining methods covered: — Room and Pillar: Used for flat, thick bedded deposits (like coal and salt); ore is removed in a grid pattern, leaving supporting pillars. Features mechanization, reduced risk of subsidence, but lower mineral recovery due to pillars left behind. — Rat Hole Mining: Primitive, labor-intensive method for thin seams, still seen in some regions. Quick, low-investment, but extremely hazardous and generally banned due to safety and environmental risks. Practical pros and cons: Room & Pillar: High mechanization, flexible, low surface subsidence, but potentially dangerous at depth and with lower recovery. Rat Hole: Supports local economies for thin seams, but with severe safety and environmental drawbacks. Includes: Step-by-step explanations Real-world case studies Diagrams and textbook references ("A Course in Mining Geology" by R.P.O.G. Swami) Perfect for: College/university geology students, early-career professionals, and those preparing for competitive exams in mining and geology. LIKE, SHARE, & SUBSCRIBE for more mining geology and underground mining tutorials! (@SGgeology #mining #undergroundmining #underground #rathole #room&pillar #UndergroundMining #RoomAndPillar #MiningMethods #MiningGeology #SuccessGuru #GeologyLecture #LearningGeology)