COUNTY LINE STONE CO., INC.

Crushed and Broken Limestone Mining and Quarrying

This includes (1) establishments primarily engaged in developing the mine site, mining or quarrying crushed and broken limestone (including related rocks, such as dolomite, cement rock, marl, travertine, and calcareous tufa) and (2) preparation plants primarily engaged in beneficiating limestone (e.g., grinding or pulverizing).

Asphalt Paving Mixture and Block Manufacturing

This includes establishments primarily engaged in manufacturing asphalt and tar paving mixtures and blocks from purchased asphaltic materials.