In 2017, Thames Water engineers were shocked to find a mass under Whitechapel that was over 250m long and weighed 130 tonnes. And what it contained was truly disgusting...
Refs:
Engelhaupt, 2017, ‘Huge Blobs of Fat and Trash Are Filling the World’s Sewers’
Moore-Bridger, 2017, ‘'Biggest ever' fatberg weighing whopping 130 tonnes found in east London sewer’
He et al., 2013, ‘Mechanisms of Fat, Oil and Grease (FOG) deposit formation in sewer lines’
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