I took a look at the Fyrberg connection. A real gold mine of information.

From the 1900 U.S. Census:
Mass, Worcester, ward 7, enumeration district 1773, sheet 13

3 Tufts St
Andrew Fyrberg, born Feb 1863, age 43, 1877 immigrated from Sweden, Fire Arm Manufacturer
Annett, wife, age 43
Anton, son, age 22, toolmaker
Herman, daughter, age 20, Fitter - arms co
Anna, daughter, age 18, office girl
Lillian, daughter, age 10, at school

42 Mason St
White, Fred, born Jan 1867, born in Vermont, Stocker Arms Co

44 Mason St
Edmonds, Geo, born June 1867, born in Mass, Laborer Arms Co

Within a few blocks I found other employees, some from Sweden. One from England the blacksmith, another from Canada, but mainly people born in either Vermont or Mass. They listed their occupations as laborer, driller, plater, blacksmith, buffer, fitter, etc.

Pete