'Archive' collection of c.3,000 records of the former Industrial Minerals Assessment Unit (IMAU) relating to sand and gravel assessment projects in Scotland, 1978-88. Includes borehole and trial pit records, grading and resource assessment data and aggregate tests.

Miscellaneous geological records for Scotland and Northern England of current or semi-current interest filed in order of accession. Some 65 accessions held which will be subject to review for permanent retention/destruction. Dataset created c.1970 and Indexed on Land Survey Record Index Database.

Archive of reports, correspondence, records of tunnel and dam site examinations, borehole records relating to the North of Scotland Hydro-Electric Board's schemes in the Scottish Highlands c.1945-1970. Arranged by hydro-electric scheme.