Manufacturing of gray iron castings for rolling mill

Facility	City	State	Employees	Status
MMain	Canton	MI	20–99	◐ LIKELY ACTIVE
MMMaine Machine Products Company	South Paris	ME	—	◐ LIKELY ACTIVE
MFMain Facility	Wichita	KS	100–499	◐ LIKELY ACTIVE
MSMain Shop	Huntington	WV	20–99	◐ LIKELY ACTIVE
MSMain Shop	Diana	TX	20–99	◐ LIKELY ACTIVE
MSMaintenance Service & Sales Corporation	Bordentown	NJ	—	◐ LIKELY ACTIVE
MMMamco Machining, INC.	Maryville	IL	—	◐ LIKELY ACTIVE
MIMancor Indiana	Anderson	IN	20–99	◐ LIKELY ACTIVE
MPManheim Pike-FLM	Lancaster	PA	20–99	◐ LIKELY ACTIVE
MCMann CO Machine Works LLC	Lancaster	CA	—	▲ REPORTED CLOSED
MMManth Mfg.	Tonawanda	NY	20–99	◐ LIKELY ACTIVE
MTManufacturing Technologies, INC.	Bernalillo	NM	—	◐ LIKELY ACTIVE
MMManzke Machine, INC	Escondido	CA	—	◐ LIKELY ACTIVE
MFMapleton Foundry	Mapleton	IL	500+	◐ LIKELY ACTIVE
MWMaple Wood Manufacturing Co., INC.	Fall River	MA	—	◐ LIKELY ACTIVE
MTMarathon Technologies, INC	Estero	FL	—	◐ LIKELY ACTIVE
MTMar-con Tool Company	Dayton	OH	—	◐ LIKELY ACTIVE
MMMaring Machining & Engineering LLC	Lafayette	CO	—	◐ LIKELY ACTIVE
MMMarion Machine	Marion	NC	20–99	◐ LIKELY ACTIVE
MPMarion Precision Tool, INC.	Ocala	FL	—	◐ LIKELY ACTIVE
MIMark.us Industry INC	Wharton	NJ	—	◐ LIKELY ACTIVE
MMMar Machine INC	West Babylon	NY	—	◐ LIKELY ACTIVE
MMMarposa Manufacturing	Waltham	MA	—	◐ LIKELY ACTIVE
MMarrero	Marrero	LA	20–99	◐ LIKELY ACTIVE
Martin & Rush Machining Inc. DBA: Phoenix Precision Machining	Trinity	NC	20–99	◐ LIKELY ACTIVE

FactoryRegistry lists 10,730 facilities whose primary industry classification is one of the 3 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced gray iron castings for rolling mill, construction, utility, automotive, and all other uses, in the shares shown above, and does not say which establishments. Where a plant’s own website or a federal registry names what that plant makes, it appears on the plant’s own page with the source named.

The U.S. Census Bureau recorded this product line in 3 US manufacturing industries in the 2022 Economic Census, as the most specific line those industries reported. At least 170 establishments reported producing it; the count for 1 of those industries was withheld.

These are counts of establishments by industry: the Economic Census publishes them as industry totals and never as a list of plants.

NAPCS collection code 2027925000. Source for the product line, the establishment counts and the shares: U.S. Census Bureau, 2022 Economic Census (ECNNAPCSIND2022). Federal source data is public domain. Facility records are compiled separately by FactoryRegistry and carry their own sources.