SIC Code 1423 — Crushed and Broken Granite

4-digit industry in the 1987 Standard Industrial Classification — still requested by banks, insurers, SEC filings and legacy systems.

Code	1423
Title	Crushed and Broken Granite
System	SIC 1987 (final edition — replaced by NAICS in 1997)

The SIC was last revised in 1987 and officially superseded by NAICS in 1997, but it never fully disappeared: the SEC still tags EDGAR filings with SIC codes, and many banks, insurers and legacy databases keep requesting it. That is why converting between the two systems is still routine work.

NAICS equivalents of SIC 1423

From the official U.S. Census concordance (1987 SIC → 2002 NAICS). Where the 2002 code no longer exists in NAICS 2022, the closest current code is shown.

NAICS 2002	Title (2002)	Current 2022 code
212313	Crushed and Broken Granite Mining and Quarrying	212313 (same code)

Other SIC codes in 14xx

• 1411 — Dimension Stone
• 1422 — Crushed and Broken Limestone
• 1429 — Crushed and Broken Stone, Not Elsewhere Classified
• 1442 — Construction Sand and Gravel
• 1446 — Industrial Sand
• 1455 — Kaolin and Ball Clay
• 1459 — Clay, Ceramic, and Refractory Minerals, Not Elsewhere Classified
• 1474 — Potash, Soda, and Borate Minerals
• 1475 — Phosphate Rock
• 1479 — Chemical and Fertilizer Mineral Mining, Not Elsewhere Classified
• 1481 — Nonmetallic Minerals Services, Except Fuels
• 1499 — Miscellaneous Nonmetallic Minerals, Except Fuels

Data: 1987 SIC titles (OSHA/Census) and official Census concordance — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.