Randy Hubbard’s practice is concentrated primarily in domestic mining law, representing clients in the business of exploring for and developing hard-rock minerals, as well as industrial minerals, coal, uranium and other energy minerals, primarily on federal lands in the United States. His practice also extends to assisting North American clients seeking mining opportunities outside the United States. Mr. Hubbard represents mining clients in both mining asset and stock purchase transactions, the formation of joint ventures, drafting and negotiating mining agreements, and in conducting day-to-day exploration, development and mining activities. He has also represented clients in obtaining financing for mining operations. In addition, his practice involves mineral title examination.

Mr. Hubbard has been actively involved in studying proposals to amend or repeal the General Mining Law of 1872, and has provided or assisted in preparation of testimony on those proposals to the United States Senate and House of Representatives. He also participated in the preparation of two studies evaluating the economic impact of proposed revisions of the 1872 Mining Law, "The Economic Impact of Mining Law Reform," and "A Comparative Analysis of Mining Fees and Royalties." He is a contributing author to "The American Law of Mining."

From 2000-2005, Mr. Hubbard was an adjunct professor at the University of Denver School of Law, teaching a mining law course. He is also currently the co-chair of the Mining Law Review Sub-Committee of the Colorado Mining Association Hard Rock Minerals Committee, and a past chairperson and legislative liaison of the Mineral Law Section of the Colorado Bar Association. He is active with the Rocky Mountain Mineral Law Foundation, serving as a member of the Special Institutes Committee and on the editorial board of the Rocky Mountain Mineral Law Foundation Journal. He has previously served as a member of the Board of Trustees of the Rocky Mountain Mineral Law Foundation, and as a vice-chair of the Hard Minerals Committee of the American Bar Association Section on Natural Resources, Energy and Environmental Law.