Slater Dust

Slater Steels owns a steel plant in Sorel-Tracy by the name of
Les Forges de Sorel, a maker of special alloyed steels often
used by the nuclear industry, makers of tools and surgical
instruments.
This material comes from the anti-pollution system of the
steel melting department. of
Slater Dust, it has the following general analysis :

SiO2 5.39%
Fe2O3 46.60
CaO 11.23
MgO 3.01
ZnO 31.75

Also small amounts of nickel, chromium, molybdenum, cadmium,
and manganese.

A possible substitution for 1% of this stuff is as follows :

Dolomite .135
Whiting .120
Zinc oxide (calc.) .310
Silica .034
Red Iron Oxide .470
Total 1.069