Small-scale mining such as quarrying and stone aggregates is reserved for Eswatini nationals.
"Interpretation
2. In this Act, unless the context otherwise requires -[...]
"mineral" means a substance formed by, or subject to, a geological process whether in solid, liquid or gaseous form occurring naturally in or on the earth and includes any metalliferous ore, building materials and material that may be used td improve the quality of the soil for agriculture but does not include surface water or groundwater;
[...]
Employment and training
28. (1) The holder of a mineral right shall give preference in employment tO citizens of Swaziland to the maximum extent possible.
(2) The holder of a mineral right relating to large-Scale operations shall -
(a) conduct training programmes for the benefit of employees and locals; and
(b) provide an adequate level of funding, having regard to all the circumstances, for the education of employees in mining related disciplines.
Local procurement
29. The holder of a mineral right shall, in the conduct of reconnaissance, prospecting and mining operations, give preference to the maximum extent possible to materials and products made in Swaziland and service agencies located in Swaziland and owned by citizens, corporations and other legal entities incorporated in Swaziland.
[...]
Eligibility restrictions in respect of small-scale operations
82.(1) Mineral rights relating to small-scale operations shall not be granted to an applicant that is not -
(a) in the case of an individual, a citizen of Swaziland; or
(c) in the case of a body corporate, a body corporate in which citizens of Swaziland hold a simple majority of the beneficial ownership of the body.
(2) Where the holder of a prospecting or mining permit becomes a person to whom such a permit may not lawfully be granted under this Act, the permit shall be deemed to have been cancelled from the date on which the person became the holder of it.
(3) In this section „citizen of Swaziland‟ means a citizen by descent as provided under section 41 of the Constitution of Swaziland Act, 2005.
[...]
State participation
133. (1) The iNgwenyama in trust for the Swazi Nation shall acquire 25% shareho1diflg without any monetary consideration in a large scale mining project for which a mining licence is granted.
(2)The share interest arrangement specified in sub-section (1) is without prejudice to the obligation that the Government shall acquire 25% shareholding without any monetary consideration in a large scale mining project for which a mining licence is granted.
(3) The share interest acquired by the Government under sub-section (2) shall be distributed as follows -
(a) fifteen percent (15%) of the share interest shall be maintained in an appropriate fund or other financial mechanism established and administered by the Government for the purpose of providing investment opportunities to citizens; and
(b) ten percent (10%) of the share interest shall be acquired by any person who is a citizen of Swaziland as defined in section 82(3) or registered in Swaziland at a fair market value to be determined by the Minister in a manner prescribed by regulation.
[...]
SCHEDULE
(Under Section 21)
CRITERIA FOR DISTINGUISHING BETWEEN SMALL-SCALE AND LARGE~SCALE PROSPECTING AND MINING OPERATIONS
Small-Scale prospecting and mining operations
I. (I) A prospecting or mining operation or a proposed prospecting or mining operation shall be classified as a small-scale operation for the purposes of this Act if -
(a) in the case of prospecting operations, the proposed prospecting area does not exceed 5 km2; 
(b) in the case of mining operations, the proposed mining area does not exceed 0.05km2
(2) Notwithstanding sub-paragraph (1), a prospecting or mining operation may also be classified as a small-scale operation for the purposes of this Act if-
(a) in the case of mining operations, the actual or estimated annual extraction of minerals or material bearing minerals does not or will not exceed 25,000 cubic meters; or,
(b) the proposed prospecting or mining operations do not or will not employ specialized prospecting or mining technologies; or
(c) the proposed prospecting or mining operations, do not or will not involve substantial expenditure.[...]" (The Mines and Minerals Act of 2011)
The Mines and Minerals Act of 2011
[<a href="https://investeswatini.org.sz/wp-content/uploads/2019/05/Mines-Minerals-Act-No-4-of-2011.pdf">Act</a>]