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NOTE
This document contains rescinded operational policy documents. They are
not applicable to classification decisions made after December 31, 2019.
Rescinded policy documents may still be relevant for decision-making, as
the WSIB may be required to use the policy in effect on a particular date.
The classification policies currently in effect and applicable for decisions
made on or after January 1, 2020 can be found in the Employer
Classification Manual.
Employer Classi�cation Manual
RESCINDED - Gold Mine Operations
Application Date January 1, 2005
Published January 3, 2005
Subject 110: Gold Mines
Document Number B-110-01
CU Code 0611-000 : Gold Mine Operations
Status
Compulsory under Schedule 1
Scope
Business activities include the extraction, dressing, and bene�ciation of gold ore, on-site bullion production, and gold
mining by placer or hydraulic methods.
It includes activities such as
alluvial gold mining
auriferous ore mining
gold panning
gold quartz ore mining
placer gold mining.
Also covered here is the production of
gold bullion, crude
gold concentrates
gold, unre�ned.
Cross-reference
Not applicable to classification decisions made after December 31, 2019 Page 1 of 2
B-110-02 : Gold Mines, Contracting Amendment/06
D-352-03 : Other Primary Smelting and Re�ning Operations
Not applicable to classification decisions made after December 31, 2019 Page 2 of 2
Employer Classi�cation Manual
RESCINDED - Gold Mines, Contracting Amendment/06
Application Date January 1, 2008
Published January 2, 2008
Subject 110: Gold Mines
Document Number B-110-02
CU Code 0921-100 : Gold Mines, Contracting Amendment/06
Status
Compulsory under Schedule 1
Scope
Business activities include taking contracts to perform work for the gold mining industry. These activities include
prospect or test drilling, mine contracting, and diamond drilling.
This category includes activities such as
cross-cutting
draining and pumping mines (dewatering)
drifting
overburden removal for mines
shaft sinking.
Also included is the incidental removal of ore from the mines during development.
Note
All business activities carried out underground on contract for the mining industry are considered mining activities
with the exception of business activities falling under the Class G (Construction) classi�cation units that include
special operations as de�ned by Section 8 of Ontario Regulation 175/98.
Cross-reference
Not applicable to classification decisions made after December 31, 2019 Page 1 of 2
B-110-02 : Gold Mines, Contracting Amendment/06
B-119-14 : Contract Drilling, Oil and Gas
B-119-16 : Other Mines, Contracting Amendment/06
B-119-17 : Other Services Incidental to Mining
C-190-05 : Water Well Drilling
G-704-02 : Testing, Inspection, and Related Services Amendment/08
Not applicable to classification decisions made after December 31, 2019 Page 2 of 2
Employer Classi�cation Manual
RESCINDED - Nickel Mine Operations
Application Date January 1, 2005
Published January 3, 2005
Subject 113: Nickel Mines
Document Number B-113-01
CU Code 0613-000 : Nickel Mine Operations
Status
Compulsory under Schedule 1
Scope
Business activities include the extraction and bene�ciation of nickel and nickel-copper ores and concentrates.
Included are
nickel oxide ore mining
nickel sulphide ore mining
nickel-copper ore mining.
Cross-reference
B-113-02 : Nickel Mines, Contracting Amendment/06
B-119-01 : Copper and Copper-zinc Mines
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Nickel Mines, Contracting Amendment/06
Application Date January 1, 2008
Published January 2, 2008
Subject 113: Nickel Mines
Document Number B-113-02
CU Code 0921-200 : Nickel Mines, Contracting Amendment/06
Status
Compulsory under Schedule 1
Scope
Business activities include taking contracts to perform work for the nickel mining industry. These activities include
prospect or test drilling, mine contracting, or diamond drilling.
This category includes activities such as
cross-cutting
draining and pumping mines (dewatering)
drifting
overburden removal for mines
shaft sinking.
Also included is the incidental removal of ore from the mines during development.
Note
All business activities carried out underground on contract for the mining industry are considered mining activities
with the exception of business activities falling under the Class G (Construction) classi�cation units that include
special operations as de�ned by Section 8 of Ontario Regulation 175/98.
Cross-reference
Not applicable to classification decisions made after December 31, 2019 Page 1 of 2
B-110-02 : Gold Mines, Contracting Amendment/06
B-119-14 : Contract Drilling, Oil and Gas
B-119-16 : Other Mines, Contracting Amendment/06
B-119-17 : Other Services Incidental to Mining
C-190-05 : Water Well Drilling
G-704-02 : Testing, Inspection, and Related Services Amendment/08
Not applicable to classification decisions made after December 31, 2019 Page 2 of 2
Employer Classi�cation Manual
RESCINDED - Copper and Copper-zinc Mines
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-01
CU Code 0612-000 : Copper and Copper-zinc Mines
Status
Compulsory under Schedule 1
Scope
Business activities include the extraction and bene�ciation of
copper
copper concentrates
copper ore
copper-zinc concentrates
copper-zinc ores.
Also included are activities such as
copper ore milling
copper-gold-silver ore mining
copper-zinc ore mining.
Cross-reference
B-113-01 : Nickel Mine Operations
B-119-16 : Other Mines, Contracting Amendment/06
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Silver Mines
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-02
CU Code 0614-000 : Silver Mines
Status
Compulsory under Schedule 1
Scope
Business activities include the extraction and bene�ciation of silver ores and silver in combination with lead
concentrates and other ores.
Included is the extraction of
silver bullion crude
silver concentrates
zinc blends (sphalerite)
zinc concentrates.
Also included is the mining of
lead ore
silver-cobalt ore
silver-lead-zinc
zinc ore.
Cross-reference
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
B-119-16 : Other Mines, Contracting Amendment/06
Employer Classi�cation Manual
RESCINDED - Molybdenum Mines
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-03
CU Code 0615-000 : Molybdenum Mines
Status
Compulsory under Schedule 1
Scope
Business activities include the extraction and bene�ciation of molybdenum ores and concentrates.
This includes molybdenite mining and molybdenum ore mining.
Cross-reference
B-119-16 : Other Mines, Contracting Amendment/06
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Iron Mines
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-04
CU Code 0617-000 : Iron Mines
Status
Compulsory under Schedule 1
Scope
Business activities include the extraction and bene�ciation of
iron concentrates
iron ores
iron pellets
magnetite concentrate
specular hematite concentrate.
This also includes the mining of ores such as
hematite
ilmenite-hematite
iron
magnetite
pyrite
siderite.
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Cross-reference
B-119-16 : Other Mines, Contracting Amendment/06
Employer Classi�cation Manual
RESCINDED - Other Metal MinesApplication Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-05
CU Code 0619-000 : Other Metal Mines
Status
Compulsory under Schedule 1
Scope
Business activities include the extraction and bene�ciation of metallic ores not elsewhere classi�ed including
antimony concentrates
columbium concentrates
magnesium concentrates
pyrochlore concentrates
tantalum concentrates
titania concentrates
tungsten concentrates.
Also included are
antimony ore mining
columbium (niobium) ore mining
ilmenite (titania) ore mining
magnesium ore mining
tantalum ore mining
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
tungsten ore mining.
Cross-reference
B-119-16 : Other Mines, Contracting Amendment/06
Employer Classi�cation Manual
RESCINDED - Asbestos Mines
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-06
CU Code 0621-000 : Asbestos Mines
Status
Compulsory under Schedule 1
Scope
Business activities include the mining of
asbestos
asbestos rock
chrysolite.
Also included is the milling of
amorite �bre
asbestos �bre
chrysolite �bre
crocidolite �bre.
Cross-reference
B-119-16 : Other Mines, Contracting Amendment/06
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Peat Operations
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-07
CU Code 0622-000 : Peat Operations
Status
Compulsory under Schedule 1
Scope
Business activities include the extracting and processing of peat and the mining of humus.
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Gypsum Mines
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-08
CU Code 0623-000 : Gypsum Mines
Status
Compulsory under Schedule 1
Scope
Business activities include the mining of gypsum, gypsum anhydrite, and gypsum crude.
This includes activities such as
anhydrite mining
gypsum rock mining
hydrous calcium sulphate (gypsum) mining.
Cross-reference
B-119-16 : Other Mines, Contracting Amendment/06
D-501-04 : Gypsum Products
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Potash Mines
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-09
CU Code 0624-000 : Potash Mines
Status
Compulsory under Schedule 1
Scope
Business activities include the mining, dressing, and bene�ciation of potash.
This includes activities such as
muriate of potash mining
potash screening and pulverizing
potassium chloride, fertilizer grade, production
potassium chloride (potash) mining.
Cross-reference
B-119-16 : Other Mines, Contracting Amendment/06
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Salt Mines
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-10
CU Code 0625-000 : Salt Mines
Status
Compulsory under Schedule 1
Scope
Business activities are limited to the mining of rock salt and salt mining (sodium chloride).
Cross-reference
B-119-16 : Other Mines, Contracting Amendment/06
D-524-03 : Industrial Inorganic Chemicals
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Other Non-metal Mines
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-11
CU Code 0629-000 : Other Non-metal Mines
Status
Compulsory under Schedule 1
Scope
Business activities include the mining and milling of non-metallic minerals not elsewhere classi�ed. This includes
minerals and products such as
barite
celestite
celestite concentrate
feldspar
feldspar, crushed, ground, or pulverized
�uorspar
�uorspar concentrate
glauber's salt
magnesite
magnesite-dolomite
nepheline syenite
pyrophyllite
pyrophyllite, crushed, ground, or pulverized
Not applicable to classification decisions made after December 31, 2019 Page 1 of 2
salt cake crystals, crude
soapstone
sodium sulphate
talc
talc crushed, ground, or pulverized.
Cross-reference
B-119-16 : Other Mines, Contracting Amendment/06
Not applicable to classification decisions made after December 31, 2019 Page 2 of 2
Employer Classi�cation Manual
RESCINDED - Coal Mines
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-12
CU Code 0631-099 : Coal Mines
Status
Compulsory under Schedule 1
Scope
Business activities include mining coal by underground or surface methods, whether operated by a coal mining
enterprise or on a contract basis. This includes establishments which break, wash, grade, or otherwise bene�ciate
coal.
Also included is the mining of
bituminous coal
brown coal
lignite
metallurgical coal
steam coal
subbituminous coal
thermal coal (bituminous and subbituminous).
Cross-reference
B-119-16 : Other Mines, Contracting Amendment/06
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Crude Oil and Natural Gas
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-13
CU Code 0711-099 : Crude Oil and Natural Gas
Status
Compulsory under Schedule 1
Scope
Business activities include the exploration for, and production of, conventional petroleum or natural gas from wells. Also included is the recovery of liquid hydrocarbons contained in natural gas and the recovery of elemental sulphur.
This includes activities such as
conventional crude oil water�ood recovery
conventional secondary crude oil recover
natural gas liquids recover
natural gas pumping
natural gas washing and scrubbing
natural sour gas processing
pentane mining.
Also included is the production of
butane gas liquid
condensate gas liquid
conventional crude oil
Not applicable to classification decisions made after December 31, 2019 Page 1 of 2
crude petroleum, light and medium
liqui�ed petroleum gases from natural gas production
natural gas liquids
pentanes plus gas liquid
petroleum condensates
propane gas liquid.
This category also includes the production of crude oil from surface shales or tar sands, or from reservoirs where the
hydrocarbons are semi-solid, not allowing for conventional crude production.
This includes activities such as
bituminous oil sand mining for oil extraction
crude oil (bituminous sands) extracting
crude oil (heavy oil) extracting
heavy crude oil extracting
heavy oil in place, extracting
oil sands surface mining
synthetic crude oil production
tar sand mining for oil extraction.
Cross-reference
B-119-14 : Contract Drilling, Oil and Gas
H-838-01 : Natural Gas Pipeline Transport
H-838-02 : Gas Distribution Systems
Not applicable to classification decisions made after December 31, 2019 Page 2 of 2
Employer Classi�cation Manual
RESCINDED - Contract Drilling, Oil and Gas
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-14
CU Code 0911-000 : Contract Drilling, Oil and Gas
Status
Compulsory under Schedule 1
Scope
Business activities include the contract drilling of wells for petroleum or natural gas, the building, repairing, and
dismantling of rigs and derricks, and the providing of specialized services to contract drillers.
This includes activities such as
contract drilling, oil and gas
�re�ghting, natural gas and oil well
natural gas well, contract drilling
oil well drilling, contract
troubleshooting, natural gas and oil well.
Cross-reference
B-110-02 : Gold Mines, Contracting Amendment/06
B-113-02 : Nickel Mines, Contracting Amendment/06
B-119-13 : Crude Oil and Natural Gas
B-119-16 : Other Mines, Contracting Amendment/06
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Other Services Incidental to Crude Oil
Application Date January 1, 2005
Published January 3, 2005
Subject 119: Other Mines
Document Number B-119-15
CU Code 0919-000 : Other Services Incidental to Crude Oil
Status
Compulsory under Schedule 1
Scope
Business activities include providing services necessary for the operation of petroleum and gas �elds.
This includes activities such as
acidizing oil and gas wells
cementing oil and gas wells
chemically treating oil wells
cleaning out, bailing and swabbing oil and gas wells
drilling water intake wells, oil and gas �elds
oil and gas �eld services such as running, cutting, and pulling casings, tubes, and rods
perforating oil and gas well casings
shooting oil and gas wells.
Cross-reference
C-190-05 : Water Well Drilling
I-958-09 : Other Scienti�c and Technical Services Amendment/08
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Other Mines, Contracting Amendment/06
Application Date January 1, 2008
Published January 2, 2008
Subject 119: Other Mines
Document Number B-119-16
CU Code 0921-300 : Other Mines, Contracting Amendment/06
Status
Compulsory under Schedule 1
Scope
Business activities include taking contracts to perform work for all mining industries except gold mining and nickel mining. The work includes prospect or test drilling, mine contracting, and diamond drilling.
This category includes activities such as
cross-cutting
draining and pumping mines (dewatering)
drifting
overburden removal for mines
shaft sinking.
Also included is the incidental removal of ore from the mines during development.
Excluded is oil or gas drilling on contract.
Note
All business activities carried out underground on contract for the mining industry are considered mining activities
with the exception of business activities falling under the Class G (Construction) classi�cation units that include
special operations as de�ned by Section 8 of Ontario Regulation 175/98.
Not applicable to classification decisions made after December 31, 2019 Page 1 of 2
Cross-reference
B-110-02 : Gold Mines, Contracting Amendment/06
B-113-02 : Nickel Mines, Contracting Amendment/06
B-119-14 : Contract Drilling, Oil and Gas
B-119-17 : Other Services Incidental to Mining
C-190-05 : Water Well Drilling
G-704-02 : Testing, Inspection, and Related Services Amendment/08
Not applicable to classification decisions made after December 31, 2019 Page 2 of 2
Other Services Incidental to Mining
Application Date January 1, 2008
Published January 2, 2008
Subject 119: Other Mines
Document Number B-119-17
CU Code 0929-001 : Other Services Incidental to Mining
StatusCompulsory under Schedule 1
ScopeBusiness activities include providing mine exploration services to metal and non-metal mine operators, includingprospecting and line cutting. Also included here is seismic drilling done by a prospecting �rm, and soil and rock testingfor mining exploration.
NoteProspecting includes searching for new mineral deposits as well as assessment and exploration work on a mineraldeposit prior to the commencement of
the stripping of the overburden in preparation for open-pit mining, or
the sinking of a shaft or the driving of an adit in preparation for underground mining.
Cross-referenceB-110-02 : Gold Mines, Contracting Amendment/06
B-113-02 : Nickel Mines, Contracting Amendment/06
B-119-16 : Other Mines, Contracting Amendment/06
C-184-07 : Other Services Incidental to Agriculture
G-704-02 : Testing, Inspection, and Related Services Amendment/08
Employer Classi�cation Manual
Not applicable to classification decisions made after December 31, 2019 Page 1 of 2
I-958-08 : Of�ces of Engineers
I-958-09 : Other Scienti�c and Technical Services Amendment/08
Not applicable to classification decisions made after December 31, 2019 Page 2 of 2
Employer Classi�cation Manual
RESCINDED - Sand and Gravel Pit Operations
Application Date January 1, 2005
Published January 3, 2005
Subject 134: Aggregates
Document Number B-134-01
CU Code 0821-000 : Sand and Gravel Pit Operations
Status
Compulsory under Schedule 1
Scope
Business activities include the extraction, crushing, washing, and screening of sand and gravel from pits or quarries.
This includes products such as
abrasive sands, crude
construction sands, crude
�lter sands, crude
foundry sands, crude
glass sand, crude
mortar sands
quartz sand, crude
quartzite, crushed or pulverized
silica sand.
This extraction category may include haulage as well as the sale or spreading of sand or gravel but only as activities
incidental to the main business activity.
Cross-reference
Not applicable to classification decisions made after December 31, 2019 Page 1 of 2
E-570-04 : Dry Bulk Materials Trucking
F-681-03 : Other Building Materials, Sales Amendment/06
Not applicable to classification decisions made after December 31, 2019 Page 2 of 2
Employer Classi�cation Manual
RESCINDED - Granite Quarries
Application Date January 1, 2005
Published January 3, 2005
Subject 134: Aggregates
Document Number B-134-02
CU Code 0811-000 : Granite Quarries
Status
Compulsory under Schedule 1
Scope
Business activities include quarrying, crushing, cutting, mining, and pulverizing of granite, including
building stone (granite, rough)
dimensional stone (granite, rough)
granite chemical and metallurgic stone (rough).
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Limestone Quarries
Application Date January 1, 2005
Published January 3, 2005
Subject 134: Aggregates
Document Number B-134-03
CU Code 0812-000 : Limestone Quarries
Status
Compulsory under Schedule 1
Scope
Business activities include quarrying, cutting, mining, crushing, and pulverizing of limestone rock, including
building stone, limestone, rough
calcium limestone, crude
chemical and metallurgical stone, limestone, crude
dolomite (limestone), crude
�uxstone, limestone, crude
limestone, agricultural
limestone, building stone, rough
limestone, dimensional stone, rough
limestone, monumental and ornamental, rough
magnesium limestone, crude.
Cross-reference
D-501-02 : Lime Operations
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Marble Quarries
Application Date January 1, 2005
Published January 3, 2005
Subject 134: Aggregates
Document Number B-134-04
CU Code 0813-000 : Marble Quarries
Status
Compulsory under Schedule 1
Scope
Business activities include mining, quarrying, cutting, crushing, and pulverizing marble, including
building stone, marble (rough)
chemical and metallurgical stone, marble (rough)
monumental and ornamental stone, marble (rough).
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Sandstone Quarries
Application Date January 1, 2005
Published January 3, 2005
Subject 134: Aggregates
Document Number B-134-05
CU Code 0814-000 : Sandstone Quarries
Status
Compulsory under Schedule 1
Scope
Business activities include quarrying, cutting, mining, crushing, and pulverizing of sandstone, including
building stone (rough)
chemical and metallurgical stone (rough)
dimensional stone (rough)
monumental and ornamental stone (rough).
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1
Employer Classi�cation Manual
RESCINDED - Shale Quarries
Application Date January 1, 2005
Published January 3, 2005
Subject 134: Aggregates
Document Number B-134-06
CU Code 0815-000 : Shale Quarries
Status
Compulsory under Schedule 1
Scope
Business activities include quarrying, cutting, mining, crushing and screening of shale and crude shale.
Not applicable to classification decisions made after December 31, 2019 Page 1 of 1