Facility	City	Industry	Status	Distance
Bluegrass Materials Texas Quarry	Cockeysville	Ground or Treated Mineral and Earth Manufacturing 327992	UNVERIFIED	13.1 KM
Hilgartner Natural Stone Co., INC.	Baltimore	Cut Stone and Stone Product Manufacturing 327991	ACTIVE	20.3 KM
Recovermat Mid-atlantic, LLC	Baltimore	Ground or Treated Mineral and Earth Manufacturing 327992	LIKELY ACTIVE	22.3 KM
Opta Minerals	Baltimore	Ground or Treated Mineral and Earth Manufacturing 327992	UNVERIFIED	23.3 KM
Polymershapes LLC	Hanover	Plastics Material and Resin Manufacturing 325211	ACTIVE	28.1 KM

Every listed plant in Baltimore County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 7 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in OSHA-OIS.

DOL Form 5500 retirement plan filingsOPERATING
Record 461460995|MD|21117|18 gwynns mills ct · first seen DEC 2024 · last seen DEC 2024
EPA Facility Registry ServiceEXISTENCE
Record 110070321102 · first seen SEP 2018 · last seen SEP 2018

IN BALTIMORE COUNTY8 other plants share this one’s industry (Other Nonmetallic Mineral Product Manufacturing, NAICS 3279); 2 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name: EPA: ROCK TOPS FABRICATION INC · NOV 2026
Street address: EPA: 18 GWYNNS MILL COURT · NOV 2026
City: EPA: OWINGS MILLS · NOV 2026
State: EPA: MD · NOV 2026
Coordinates: EPA: 39.414676,-76.781487 · NOV 2026
Employees (band): DOL: 20-99 · DEC 2024
Retirement plan filing (Form 5500): DOL: 31 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024

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