noun, Metallurgy. 1. the act or process of forming a metallic object by electroplating a removable mandrel or matrix. Origin of electroforming.
Hamilton, Montana Area Code. Hamilton, MT Area Codes are. Hamilton, MT is currently using only one area code which is area code 406. In addition to Hamilton, MT area code information read more about area code 406 details and Montana area codes. Hamilton, MT is located in Ravalli County and observes the Mountain Time Zone.
MT Area Codes for the Largest Cities. 1  Billings area code 406. 2  Bozeman area code 406. 3  Butte-silver Bow area code 406.  Great Falls area code 1  406. Helena area code 2  406. Missoula area code  406.