The series contains chronological records sent and received by the Industry and Mining Division (IENIM), Industry and Energy Department that were forwarded to, and maintained in the IISC.

Many of the files maintained in the IISC are thin, some containing a single piece of correspondence. The IISC presumably implemented a file classification system that organized files by the creator unit code indicated on the physical folders. Files were subsequently titled by country, subject, or sector. Country files are secondarily labeled as subsector (coal, gas, oil, environment, steel, energy, etc.), by project title and loan or credit number, or general. The unit codes identify the correspondence as sent and received by the following: Industry and Mining (IEN IM); IENIM predecessor, Industry Development Division (IEN IN); and IEN DR (Office of the Director). The latter two are smaller in volume.

The majority of records relate to industrial manufacturing and mining activities and support to specific lending or technical assistance projects in various countries. The correspondence includes the division's comments and contributions to project documents (initiating memoranda, audit reports), draft papers and other products, as well as arrangements of missions or project consultancy services. General sector files that do not cover a particular country mostly pertain to industry, mining, minerals, coal, steel, and forestry and also contain IENIM's comments on project reports and other support activities.

A smaller portion of records, mostly individual files, relate to the division budget and work plan, training seminars, conferences, and a file titled "local committee". The training file contains information about Bank seminars organized by other units or external seminars. The agenda and related records of the Industry Sector Board's first retreat are included in the conferences file. The local committee file pertains to IENIM collaboration and sharing information with the International Committee for Economic Reform and Cooperation and its Raw Materials Working Group.

Correspondence consists of outgoing internal memoranda, letters, hard copies of All-in-1 messages, facsimiles, telexes, and attachments. Much of the correspondence is between division staff, regional technical units, and with Central Operations Department Office of the Director (CODDR). Other letters, facsimiles, or telexes are addressed to government officials or representatives of external agencies regarding collaborative activities and meeting arrangements.

The record types occasionally filed with the correspondence include summaries of meetings or seminars, agenda, Terms of Reference (TORs), Initiating Memorandum, aide-memoires, and external reports, some of which are authored by other international organizations.