The binding legal principles established are: (1) Under the Occupational Diseases in Mines and Works Act 78 of 1973, mine-owners and works-owners may be levied to recover deficits in the Mines Account and Works Account respectively; (2) The Commissioner may determine levies by categorizing mines (e.g., by mineral type) and determining levies with reference to the risk attaching to that category, pursuant to sections 62(2) and 20(3)(a), rather than being confined to individual mine-specific risk assessments; (3) Section 62(1)'s reference to "every person who performs risk work" encompasses all persons who perform risk work at any time, not only current workers, meaning levies on current workers may be designed to fund liabilities arising from former workers' claims; (4) The State's financial obligation toward the Mines and Works Compensation Fund is limited to the specific circumstances enumerated in section 74 of the Act, and does not extend to a general obligation to fund deficits in the Mines Account or Works Account; (5) Deficits in the Mines Account and Works Account are to be made good through additional levies on the respective mine-owners and works-owners.