|
| Company | Production | Employees | County |
| Hanson Aggregates Pa Inc. | 7,464,752 | 261 | Bucks, Centre, Chester, Clinton, Delaware, Luzerne, Lycoming, Monroe, Tioga, Wayne |
| New Enterprise Stone & Lime Co Inc. | 7,254,242 | 205 | Bedford, Blair, Clearfield, Franklin, Huntingdon, Somerset |
| Eastern Ind Inc. | 6,020,862 | 269 | Berks, Clinton,Dauphin, Lancaster, Lehigh, Mifflin, Northampton, Northumberland, Perry, Tioga, Union |
| Haines & Kibblehouse Inc. | 5,732,963 | 37 | Bucks, Carbon,Dauphin,Lancaster, Lehigh, Monroe,Northampton |
| Pennsy Supply Inc. | 5,143,539 | 111 | Cumberland, Dauphin, Lebanon, Luzerne, Perry, Schuylkill |
| Tarmac Amer | 4,174,000 | 79 | Adams |
| Martin Limestone Inc | 3,838,389 | 783 | Chester, Lancaster |
| Glasgow Inc | 3,782,906 | 80 | Chester, Montgomery |
| Eureka Stone Quarry Inc. | 3,388,097 | 95 | Bucks, Monroe, Pike, Wayne |
| Pa Lime Inc. | 3,170,532 | 68 | Lebanon |
| Valley Quarries Inc. | 3,051,795 | 106 | Adams, Cumberland, Franklin |
| Commercial Stone Co. Inc. | 2,950,124 | 89 | Fayette |
| Southdown Inc. | 2,657,316 | 111 | Lawrence, York |
| Essroc Cement Corp. | 2,619,103 | 183 | Lawrence, Lehigh, Northampton |
| Highway Materials Inc. | 2,512,075 | 52 | Berks, Montgomery |
| Better Materials Corp. | 1,973,337 | 18 | Bucks |
| Pioneer Mid Atlantic Inc. | 1,905,622 | 78 | Armstrong |
| Glenn O. Hawbaker Inc. | 1,878,241 | 47 | Centre, Clearfield, Lycoming, Mifflin |
| Martin Stone Quarries Inc. | 1,800,000 | 36 | Berks |
| York Bldg Prod Co Inc. | 1,778,457 | 31 | York |
| Allan A Myers Inc. | 1,736,373 | 26 | Berks |
| Hempt Bros Inc. | 1,623,261 | 53 | Cumberland, Dauphin |
| IA Const Corp. | 1,558,313 | 86 | Crawford, Lawrence, Venango, Warren |
| Hercules Cement Co. | 1,549,273 | 12 | Northampton |
| Quality Aggregates Inc. | 1,539,959 | 46 | Butler, Lawrence |
| Allegheny Mineral Corp. | 1,494,610 | 55 | Butler |
| Keystone Cement Co. | 1,471,443 | 38 | Northampton |
| Global Stone Penroc Inc. | 1,461,747 | 54 | York |
| Berks Prod Corp. | 1,409,000 | 22 | Berks |
| Lafarge Corp. | 1,359,673 | 13 | Allegheny, Lawrence, Lehigh, Northampton |
| Reading Materials, Inc. | 1,321,936 | 26 | Berks, Montgomery |
| JE Baker Co. | 1,290,057 | 5 | York |
| Rohrers Quarry Inc. | 1,211,742 | 24 | Lancaster |
| Compass Quarries Inc dba Independence Const Materials | 1,131,874 | 27 | Lancaster |
| Waste Mgmt Disp Svcs Pa Inc. | 1,093,723 | 8 | Bucks, Erie |
| Warner Co. | 1,051,566 | 27 | Bucks, Chester |
| Binkley & Ober Inc. | 1,047,443 | 21 | Lancaster |
| Subtotal | 96,448,345 | 3,282 | |
| Total for all operators | 133,933,111 | 6,158 | |
| Percentage | 72% | 53% |
|