(1) In regulation 5 of the Principal Regulations, for the definition of engineered stone substitute —
""engineered stone" means an artificial product that—
(a) contains 1% or more crystalline silica, determined as a weight/weight (w/w) concentration; and
(b) is created by combining natural stone materials with other chemical constituents such as water, resins or pigments; and
(c) becomes hardened; and
(d) is not any of the following—
(i) a concrete or cement product;
(ii) a brick, paver or other similar block;
(iii) a ceramic wall or floor tile;
(iv) a porcelain product that does not contain resin;
(v) a sintered stone product that does not contain resin;
(vi) a roof tile;
(vii) grout, mortar or render;
(viii) plasterboard;
(ix) a product determined not to be engineered stone by the Authority under regulation 6(1)(ea).".
(2) In regulation 5 of the Principal Regulations, the definitions of engineered stone control plan and engineered stone licence are revoked .
(3) In regulation 5 of the Principal Regulations, in the definition of "licence"—
(a) in paragraph (d), for "licence; or" substitute "licence;";
(b) paragraph (e) is revoked .
(4) In regulation 5 of the Principal Regulations, in the definition of "respiratory protective equipment", omit "and Subdivision 6 of Division 1 of Part 6.1".