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The materials to make M340 travel 200km to get to our plant (from Ravenscrag, SK).
M370 is a different story. The kaolin (from Georgia) travels 3700km, the nepheline (from Ontario) travels 3100km, the silica (from Illinois) travels 2300km, the ball clay (from Tennessee) travels 2800km and the bentonite (from Wyoming) travels 1000km. Weighting each material distance by its percentage in the recipe calculates to 2900 clay-kilometres! Thus, all the boxes of M370 we make in a year travel about 60,000,000 km, enough to go to the moon and back 50+ times! This realization brings renewed motivation to develop new clay deposits, ones that are white enough to make an M370-like body and which are only 400km away. Until then, you can cut the mileage now: Use an engobe on M340 and make it whiter than M370 (and darker than Coffee clay).
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