Western Australian Current Regulations Western Australian Current Regulations (1) In these
regulations —
processing , in relation to a CSS,
means —
(a) the
use of power tools or mechanical plant to carry out an activity involving the
crushing, cutting, grinding, trimming, sanding, abrasive polishing or drilling
of a CSS; or
(b) the
use of roadheaders to excavate material that is a CSS; or
(c) the
quarrying of a material that is a CSS; or
(d)
mechanical screening involving a material that is a CSS; or
(e)
tunnelling through a material that is a CSS; or
(f) a
process that exposes, or is reasonably likely to expose, a person to
respirable crystalline silica during the manufacture or handling of a CSS.
(2) In these
regulations —
crystalline silica substance (CSS) means
material that contains at least 1% crystalline silica, determined as a
weight/weight (w/w) concentration.
Note for this definition:
Engineered stone is a
type of CSS.
(3) In these
regulations —
crystalline silica —
(a)
means crystalline polymorphs of silica; and
(b)
includes the following substances —
(i)
cristobalite;
(ii)
quartz;
(iii)
tridymite;
(iv)
Tripoli.
(4) In these
regulations —
engineered stone —
(a)
means a CSS that —
(i)
is an artificial product; and
(ii)
is created by combining natural stone materials with
other chemical constituents such as water, resins or pigments; and
(iii)
becomes hardened;
but
(b) does
not include the following —
(i)
concrete and cement products;
(ii)
bricks, pavers and other similar blocks;
(iii)
ceramic wall and floor tiles;
(iv)
grout, mortar and render;
(v)
plasterboard;
(vi)
porcelain products;
(vii)
sintered stone;
(viii)
roof tiles.
[Regulation 529A inserted: SL 2024/139
r. 17.]