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Operative Plasterers' and Cement Masons' International Association
AFL-CIO (OPCMIA)— Local #21 & Area 561

cement masons 561


The Operative Plasterers' and Cement Masons' Union Local #21 and Area 561 represent skilled workers in two major segments of the construction field: plaster and concrete. Both segments are important to the construction industry. Skilled tradespersons working with concrete are involved with commercial construction, concrete repair, curbs and gutters, decorative concrete, flatwork concrete, heavy and highway projects, industrial, and residential concrete installations/repair. Skilled union workers who work with various plaster products develop skills utilized in the walls and ceilings industry. Plasterers work with exterior insulation finish systems (EIFS), fireproofing, free form and theme plastering, historical restoration, interior gypsum plaster, motion picture and special effects, portland cement plaster, and specialty and colored finishes.


1224 E. Diehl Ave
Des Moines, IA 50315

Business Manager: Earl R. Agan, Jr.
Phone (cell): (515) 202-6116

Phone: (515) 266-1668 (Office)
or 1-800-871-1668

The American Labor Movement has consistently demonstrated its devotion to the public interest. It is, and has been, good for all America." ~ John F. Kennedy


Signatory Contractors Serving the CRICBT area


City Phone Number

Bernet Construction Company

Marion, IA 52302 (319) 377-7111

BIS Industrial Services, Inc.

Iowa City, IA 52240 (319) 339-2149

Blahnik Construction Co.

Cedar Rapids, IA 52404 (319) 364-7136

Bowker Mechanical Contractors

Cedar Rapids, IA 52406 (319) 364-2403

Calacci Construction

Iowa City, IA 5244 (319) 354-7000

Centennial Contractors

Moline, IL 61265 (309) 736-1212

Kleiman Construction, Inc.

Cedar Rapids, IA 52404 (319) 364-8864

Miron construction Co., Inc.

Neenah, WI 54957 (920) 969-7000

Newell Machinery Co., Inc.

Hiawatha, IA 52233 (319) 393-1610

Olmstead Construction

Cedar Rapids, IA 52402 (319) 362-9469

Rex's Custom Concrete, Inc.

Cedar Rapids, IA 52402 (319) 373-2655

Rinderknecht Associates, Inc.

Cedar Rapids, IA 52406 (319) 366-7781

Ryan Companies, Inc.

Cedar Rapids, IA 52402 (319) 377-1067

Treiber Construction Co., Inc.

Davenport, IA 52804 (563) 386-5151

Weitz Industrial

Cedar Rapids, IA 52402 (319) 247-7400


Contact information for the Cedar Rapids/Iowa City Building Trades Council may be found on the CRICBT Council's contact page.
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