You can contact Columbia Quarry Co.
Main Office at (618) 646-5306

Plant Phone Numbers

 

Dupo Plant
(618) 286-4824

 

 

Waterloo Plant
(618) 939-8833

 

Plant Loading Hours

 

Dupo       
                                                         Monday - Friday            6:30 A.M. to 4:30 P.M.
                                                         Saturday/Sunday Closed

 

Waterloo
                                                         Monday - Friday            7:00 A.M. to 4:30 P.M.
                                                         Saturday/Sunday Closed