This section presents the great bulk of the material in the archive. It comprises the contents of Morton's files relating to the hundreds of geotechnical consultancies with which he and his company, Edgar Morton and Partner, were involved from the 1920s to early 1990s. As the company continued in being after Morton's death in 1973, there are considerable quantities of papers from after that date. Many projects initiated in Morton's lifetime continued through the 1970s and beyond.
Following the organisation of the outline list, the section is divided into four series:
- EMP/3/1-225: Public Water Supply, 1885-1993 [bulk 1930-1990];
- EMP/3/226-404: Private Water Supply, 1926-1991;
- EMP/3/405-588: Foundation, Stability and Construction Problems, 1930-1992;
- EMP/3/589-665: Planning and Mineral Workings, 1890-1988 [bulk 1945-1980].
Within these series the arrangement of material has largely followed the listing of the outline list. There was found to be a considerable overlap of material between the series, particularly between Public Water Supply and Foundation, Stability and Construction Problems.
In a number of cases projects listed in the outline list proved either to have no documentation or the material listed was subsequently found filed elsewhere. This has resulted in a number of ghost entries in this catalogue indicated by the formula 'Not used'.