Phosphates nodules, referred to locally as coprolites, were dug in the area surrounding Ely between 1850 and 1890 for use as an agricultural fertiliser.
Edini mineral je bil gramoz za agregat, pa tudi kreda, glina za opekoe (Ampthill in Kimmeridge glina), fosfat (iz Woburn Sands, Gault in Cambridge Greensand), pesek in gramoz ter šota so v preteklosti proizvajali v manjšem obsegu.