"Zinc Potterman"wrote ...
I just acquired an allotment and there are lots of old tyres dotted about.
I was hoping to stay pretty organic.
Do I need to get the tyres off quick?
Are they a source of pollution/toxins as they break down?

Everything you wanted to know about tyres...
http://floti.bell.ac.uk/johnpenny/pdfs/ea_tyres.pdf


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Regards
Bob
In Runnymede, 17 miles West of London