Jets brought in to tackle 300-tonne fatberg blocking Birmingham sewer
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image captionThe giant fatberg has built up slowly over time , Severn Trent said
Workers trying to remove a huge fatberg clogging a Birmingham sewer hope high-pressure jets will tackle the horrible, gunky mess .
If they do not work, workers will have to chip away at the mass with spades.
The 300-tonne berg in Hodge Hill, and which goes underneath the M6, is the biggest Severn Trent said it has ever had to tackle.
Wet wipes being flushed away or oil and grease being poured down sinks has allowed it to build up, the firm said.