Class Code: 1624

Per NCCI's Scopes Code Description:

Code 1624, a “not otherwise classified” classification, applies to employers that quarry various materials including agricultural limestone, aplite rock, argillaceous limestone, ballast rock, cement rock, coral rock, feldspar, granite, hard rock shale, limestone, rock asphalt, slate, and silica rock. Code 1624 includes open pit-type quarrying or “surface mining” operations including stripping of surface material (overburden) covering the minerals or rocks to be quarried. Additionally, Code 1624 includes drilling and blasting operations when performed by an employer in connection with quarrying operations that are classified to this code. Code 1624 does not apply to contractors, not otherwise performing quarrying operations, who drill or blast operations at quarries. Refer to Codes 6204 and 6217 for classifications that may be applicable to these specialty operations.

Code 1624 does not include underground mining operations.

Code 1624 does not apply to an employer who quarries cement rock or limestone and uses at least 75% of the quarried output to manufacture cement or lime. Refer to Code 1654—Quarry—Cement Rock and Code 1642—Quarry—Limestone—Surface for these exposures.

Code 1624 includes slag excavation and reclamation of iron from slag. It also applies where dimension stone is being quarried for building, paving, monumental, or other similar purposes.

Stone cutting at quarry sites is classified to Code 1624. Refer to Code 1803—Stone Cutting or Polishing for stone cutting and related operations such as grinding, sandblasting, or polishing away from the quarry site.

Certain Code 1624 operations are designated as “not otherwise classified” (NOC). These NOC operations will apply to an employer only when no other classification more specifically describes the employer’s operations. The following is a representative list of operations somewhat related in nature to Code 1624 operations that are not assigned to Code 1624.

1016 Coal Mining—NOC
1005 Coal Mining—Surface & Drivers
1642 Lime Mfg.—Quarry—Surface
1165 Mining NOC—Not Coal—Surface & Drivers
1164 Mining NOC—Not Coal—Underground & Drivers
1654 Quarry—Cement Rock—Surface & Drivers
4000 Sand or Gravel Digging & Drivers

State Addendum
Massachusetts The quarrying of cement rock, regardless of the quarried output percentage used to manufacture cement, is assigned exclusively to Code 1624 (Codes 1642 and 1654 are N/A MA).

All stone cutting, regardless of whether conducted at or away from quarry sites, is assigned to Code 1624. Code 1624 is also applicable to insureds engaged in cutting, grinding, sandblasting, polishing and engraving stone such as limestone, granite, marble, and slate and includes stone dealers engaged in polishing and engraving. Slate milling, grindstone and millstone manufacturing, lithographic stone manufacturing and marble or slate mantle manufacturing are also assigned to Code 1624. Code 1016—Coal Mining—NOC, Code 1005—Coal Mining—Surface, Code 1165—Mining NOC—Not Coal—Surface and Code 1164—Mining NOC—Not Coal—Underground are N/A MA.

Rate per $100. of Renumeration: $ 2.15

Construction Exemption Required: No