This industry comprises establishments primarily engaged in mining or quarrying dimension stone, rough blocks or slabs of stone, and crushed and broken stone.

Classification Reference

Official classification fields for this page

Official classification fields taken from the current StatCan source bundle.

Characteristic	Description
Official title	Stone mining and quarrying
Classification	NAICS Canada 2022 Version 1.0
Publishing authority	Statistics Canada
Hierarchical level	Industry
Parent code	2123 - Non-metallic mineral mining and quarrying
International correspondence	ISIC Rev. 4; harmonized with US and Mexico NAICS at higher levels.
Source	https://www.statcan.gc.ca/en/subjects/standard/naics/2022/v1/index
Source verification	2026-08-13

Canada Business Context

Canada-wide tax and filing context

Canada-wide business, tax, and filing context from the local country pack and tax pack.

Characteristic	Description
Tax authority	Canada Revenue Agency (CRA)
Business identifier	Business Number (BN): 9-digit identifier with program account suffixes such as RT0001 for GST/HST, RP0001 for payroll, and RC0001 for corporate income tax.
Filing requirements	Business Number registration; Form T2125 (Statement of Business or Professional Activities) attached to T1; Form T2 (Corporation Income Tax Return); Form T5013; Form GST34
Sector authority	No cluster authority recorded in the local country pack.

Classification Confidence Score

3 of 5 factors passing

6/ 10

Verified official source — naics-scian-2022-structure-v1-eng.csv (2026-08-13)

International crosswalk — No international correspondence found

Previous edition migration — NAICS 2017 to 2022 continuity confirmed

Complete hierarchy — 4 levels confirmed in hierarchy

Size or threshold documented — Not applicable for hub levels

Trade or export match — No direct HS code correspondence in current bundle

Legacy crosswalk — Legacy system (SIC 1980) retired in this region

Business Profiles

When you might need code 21231

Professions specific to this sector are linked to this part of the Canadian classifier so the page speaks to real work teams.

01 21231

Drilling rig coordinator

Use this page when the file covers drilling programs, rig moves, contractor rosters, and site readiness. It helps confirm whether 21231 Stone mining and quarrying is the closest NAICS Canada branch before BN registration, GST/HST review, banking onboarding, procurement notes, or internal classification work.

02 21231

Oilfield service dispatcher

Use this page when the file covers rig support crews, field maintenance calls, service trucks, and wellsite logistics. It helps confirm whether 21231 Stone mining and quarrying is the closest NAICS Canada branch before BN registration, GST/HST review, banking onboarding, procurement notes, or internal classification work.

03 21231

Mineral exploration geologist

Use this page when the file covers mineral surveys, sample programs, drill targets, and exploration camps. It helps confirm whether 21231 Stone mining and quarrying is the closest NAICS Canada branch before BN registration, GST/HST review, banking onboarding, procurement notes, or internal classification work.

04 21231

Mine ventilation technologist

Use this page when the file covers underground airflow planning, safety monitoring, fan systems, and shaft support. It helps confirm whether 21231 Stone mining and quarrying is the closest NAICS Canada branch before BN registration, GST/HST review, banking onboarding, procurement notes, or internal classification work.

Business Map

Business categories in this branch

A rotating set of business activity examples linked to this part of the Canadian hierarchy.

In this section

21231Stone mining and quarrying
21232Sand, gravel, clay, and ceramic and refractory minerals mining and quarrying
21239Other non-metallic mineral mining and quarrying

Source row

21231Stone mining and quarrying

This page mirrors the source row from the structure CSV and the matching rows from the elements and crosswalk files.

Frequently asked questions

What does code 21231 cover?

Stone mining and quarrying: This industry comprises establishments primarily engaged in mining or quarrying dimension stone, rough blocks or slabs of stone, and crushed and broken stone.

Which level of the hierarchy is 21231?

It is a industry page in the NAICS Canada 2026 hierarchy.

What is the parent of 21231?

It rolls up to 2123 Non-metallic mineral mining and quarrying.

Should I stop at 21231 or go lower?

4 lower-level item(s) sit under this branch: Granite mining and quarrying, Limestone mining and quarrying, Marble mining and quarrying, Sandstone mining and quarrying.

Are official inclusion notes attached to 21231?

No inclusion rows are attached to this page in the local elements file.

Are there exclusion notes for 21231?

No exclusion rows are attached to this page in the local elements file.

Does 21231 include illustrative examples?

No example rows are attached on this page in the local elements file.

What kinds of businesses often start from this page?

Examples in this branch include Field drilling, Quarry operations, Oil and gas support, Industrial minerals.

Is there an ISIC mapping for 21231?

No ISIC correspondence row is attached to this page.

Does this page show a US NAICS reference?

No same-code US NAICS reference row is attached on this page.

Why are both English and French titles shown?

NAICS Canada is bilingual, so the page keeps both language titles visible for comparison and lookup.

Where does the page text come from?

From the local StatCan structure file, elements file, ISIC crosswalk, and the bundled US 6-digit reference workbook.