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performing operations (20) 20
transporting (20) 20
crushing, pulverising, or disintegrating (14) 14
crushing, pulverising, or disintegrating in general (14) 14
milling grain (14) 14
preparatory treatment of grain for milling (14) 14
other separating by dry methods applicable to bulk material,e.g. loose articles fit to be handled like bulk material (5) 5
separating solids from solids (5) 5
seperating solids from solids by sieving, screening, orsifting or by using gas currents (5) 5
sorting (5) 5
chemistry (4) 4
metallurgy (4) 4
artificial stone (3) 3
cements (3) 3
ceramics (3) 3
compositions thereof, e.g. mortars, concrete or like buildingmaterials (3) 3
concrete (3) 3
lime, magnesia (3) 3
refractories (3) 3
slag (3) 3
treatment of natural stone (3) 3
apparatus using free vortex flow, e.g. cyclones (1) 1
centrifugal apparatus or machines for carrying-out physical orchemical processes (1) 1
compositions based thereon (1) 1
compositions of macromolecular compounds (1) 1
magnetic or electrostatic separation of solid materials from solidmaterials or fluids (1) 1
magnetic or electrostatic separation of solid materials fromsolid materials or fluids (1) 1
organic macromolecular compounds (1) 1
separation by high-voltage electric fields (1) 1
separation of solid materials using liquids or using pneumatictables or jigs (1) 1
their preparation or chemical working-up (1) 1
use of inorganic or non-macromolecular organic substances ascompounding ingredients (1) 1
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