From Mountain to Monument: The Industrial Scale of Marble Extraction
In short: Ever wondered how massive marble slabs end up in your kitchen or on national monuments? This video takes you deep into the world's largest underground quarries to witness the industrial power required to move mountains.
In Southern Vermont, workers navigate nearly a mile into mountain caves by truck to reach the source of stone used for iconic landmarks like the Jefferson Memorial and Arlington National Cemetery. The process begins with machines using long blades to tunnel through the rock, carving out massive blocks from the walls.
The extraction is a feat of engineering: a 150-ton marble block is released by expanding a water bag cushion to let it fall free. Once at the finishing plant, General Manager Luca Mannolini inspects each block for imperfections before machines slice them into batches of 40 slabs, which are then polished, honed, or brushed.
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Sources
- Summary by Intellect · source: How Marble is Extracted | This Old House
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