Dr Brian Senior commenced his professional career with the Commonwealth Government, Bureau of Mineral Resources in reconnaissance and semi-detailed geological mapping with extensive field experience in Queensland, Northern Territory and South Australia.

He formed BR Senior & Associates in 1982 and undertook contract photogeology and satellite imagery interpretation for Huntings (UK) Pty Ltd and Australian Photogeological Consultants Pty Ltd. His specialist knowledge of the regolith (doctorate thesis) led to new methods of photogeological mapping with emphasis on the identification of alteration due to mineralization.

Recognition of the structural significance of topographically inverted landforms in weathered profiles led to the identification of probable hydrocarbon entrapment sites. He also developed a mapping system relevant to the planning and execution of geochemical surveys. These studies contributed to the discovery of several economic mineral and hydrocarbon discoveries in Australia and overseas, including:

• Hartley platinum (Zimbabwe)
• Gold and base metals in regolith (Ghana, Australia, New Zealand, Sardinia)
• Wapulu epithermal gold (Papua New Guinea)
• Sapphire placers (Laos, Queensland, NSW)
• Tintaburra and Chandos hydrocarbon structures (Queensland)
• Heavy mineral placers (Western Australia, Victoria, NSW, Northern Territory)
• Groundwater in the Great Artesian Basin (Queensland, NSW, South Australia, Northern Territory)
• Uranium exploration (South Australia, Queensland)