there is only a limited number of commercial sources of roadstone which is sufficiently durable and resistant to polishing for use on present-day heavily trafficked roads. the institute of geological sciences and the transport and road research laboratory have carried out a survey of the british arenaceous (gritstones and similar)rocks with the object of finding new sources of suitable roadstone.an account is given of the selection,sampling and testing of a cross-section of possible suitable arenaceous rocks,together with a discussion of the results.the survey has disclosed that there are potentially large resources of high-quality material in the west country,wales,shropshire,southern scotland and northern ireland.the survey has provided information that will be of value in future assessments and also in selecting stone within a quarry.(a)

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