Founded in 1893 by a group of individual miners, in 1955 the AusIMM was officially incorporated by Royal Charter received from the Duke of Edinburgh and granted by Queen Elizabeth II.
The Royal Charter requires the AusIMM to have a set of By-Laws, which establish key elements of the Institute's structure including membership grades, the existence of Branches and Societies and the AusIMM Board. AusIMM also operates under Regulations, which sit beneath the By-Laws and set out specific processes and requirements for membership, professional conduct and other AusIMM operations. Regulations may be altered by Board decision with 30 day’s notice to members.
A supplementary Royal Charter and new By-Laws were granted in 2017 and came into effect on 1 January 2018.