File:Soapstock and exausted bleanched earth from oil refining process.jpg
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![File:Soapstock and exausted bleanched earth from oil refining process.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Soapstock_and_exausted_bleanched_earth_from_oil_refining_process.jpg/800px-Soapstock_and_exausted_bleanched_earth_from_oil_refining_process.jpg?20220630123158)
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