In June 2015 the Minister of Mineral Resources promulgated the Regulations for Petroleum Exploration and Production, 2015 under s 107(1) of the Mineral and Petroleum Resources Development Act 28 of 2002 (MPRDA). These regulations created a regulatory framework governing, inter alia, environmental authorisation processes and environmental management norms and standards for petroleum exploration and production, including hydraulic fracturing (fracking). Farmers and civil society organisations with interests in the Karoo challenged the regulations in two High Court applications (the Stern matter and the TKAG matter), arguing that the Minister lacked the statutory power to make regulations dealing with environmental matters, especially after the introduction of the One Environmental System, which positioned the National Environmental Management Act 107 of 1998 (NEMA) as the sole environmental framework. The High Courts reached different conclusions, leading to consolidated appeals before the Supreme Court of Appeal.