clavateclavule or clavulae or clavulaeclavusclawclayclay ball or clayball or clayballclay band ironstone or limestone or limestoneclay band or clayband or claybandclay boilclay colloidclay core earthfill damclay flat or clay flats or clay flatsclay gougeclay gravelclay groutingclay marlclay mineralclay minerals or clay mineral or clay mineralclay or with or flintsclay peaty soilclay pocketclay puddleclay rockclay shaleclay vein or horse back or horse back or dert slipclaycreteclayeyclayey earthclayey sandclayey sandstoneclayey siltclayey tuffclayiteclaypanclays and shales pozzolansclaystoneclaystone porphyryclean coal technologiesclean dataclean sandstonecleanoutcleanout hatchcleansingclear spanclearanceclearance lossclearance pressureclearcreekitecleatcleavage
