Aggregate
Management
Andy Haas
General Manager
(605) 336-5784
Sales
Jeff Thompson
(605) 336-5766
Ty Sanow
(605) 336-5765
Justin Foss
Yankton Area
(605) 655-4350
Ordering – Sioux Falls Area
Dispatch
Orders less than/equal to 500 tons
(605) 336-5800
Yankton Sand & Gravel
Dispatch
(605) 665-5345
Ready Mix
Management
Terry Coomes
General Manager
(605) 336-5786
Jim Simunek
Division Manager
(605) 336-5783
Sales
Terry Pederson
Sioux Falls Area
(605) 336-5858
Emma Roth
Sioux Falls Area
(605) 336-5843
Justin Foss
Yankton Area
(605) 655-4350
Ordering
Dispatch
Sioux Falls Plants and Chancellor Plant
(605) 336-1740
Dispatch
Yankton Plant
(605) 336-1740
Pumps
Dispatch
39m, 34m & 28m
(605) 336-1740
Asphalt
Management
Andy Haas
General Manager
(605) 336-5784
Sales
Brandon Klinger
(605) 336-5873
Justin Foss
Yankton Area
(605) 655-4350
Ordering
Dispatch
Sioux Falls Plants
(605) 336-5800
Yankton Asphalt Plant
Dispatch
(605) 665-0054
Hardscapes Outlet
Management
Ray Landberg
Manager
(605) 251-1457
Stu Horsted
VP – General Manager
(605) 336-5898
Locations
Sioux Falls Hardscapes Outlet
3500 N Potsdam Avenue, Sioux Falls, SD 57104
(605) 336-5845
Harrisburg Hardscapes Outlet
47055 Smith Circle, Harrisburg, SD 57032
(605) 336-5834
Ellis Road Hardscapes Outlet
100 N. Ellis Road, Sioux Falls, SD 57107
(605) 809-6021
Finance And Human Resources
Management
Jason Lothspeich
Controller, CPA
(605) 336-5896
Molly Smith
HR Manager
(605) 336-5764
General Contact Information
Knife River – South Dakota
1500 N. Sweetman Place
Sioux Falls, SD 57107
(605) 336-5760