Minutes of general, special and committee meetings of the Powlett River (Wonthaggi) Branch (1911-1954), District Committee of Management (1913-1954) and Combined Unions of Carpenters, Engineers, Engine Drivers and Miners (1917-1948), union rules, correspondence, financial records, membership records for Powlett River and Altona branches (1918-1921), arbitration material and printed material. Also includes 1812 'overman's record', records of Hawdon Pit, Percy Main Colliery, and an envelope containing samples of coal.

Federated Mining Mechanics' Association, then Colliery Mechanics' Mutual Protective Association, Hunter River District minutes (1908-1967, except 1927-1930 volume at Z586); Federated Mining Mechanics' and Surfacemen's Mutual Protective Association presscopy letterbook (1911-1920); Australasian Coal and Shale Employees' Federation rules, financial records, membership records for New South Wales Northern District (1916-1918), New South Wales Southern and Western Districts, Queensland, Victoria and Tasmania (1918), New South Wales Central District (1924-1930), and Captain's Flat lodge (1949), mining authorisations (1980, 1991), and printed material. Also includes 'pence books' of Barrier Branch of the Amalgamated Miners' Association (1911-1914) and photographs of Broken Hill dust-storm (1907), commemorative pennants and plaques for International Miners' Organisation conference (1987) and union neckties.