Based in a tent camp 30 miles by dirt road from the nearest town, Myhrvold worked alongside paleontologists from Montana State University's Museum of the Rockies.

FORBES: Dig It

Where there is a change, 9.5% would have access to post office services within one mile by road distance to the nearest alternative branch.

BBC: NEWS | UK | Wales | Closure threat on 13 post offices

He said residents have been asked to dispose of their litter in dustbins which would then be taken away by a road-sweeper to the nearest rubbish dumping site.

BBC: Litter louts face justice on wheels