::: ::: Krech Ojard Engineers and Architects ::: :::

Architecture Overview
Educational/Institutional
--Proctor Schools
--Rockridge Elementary
--Kirby Plaza Project
--St. Scholastica
--St. Scholastica Housing
--Aftenro Home
--Bemidji State University
--Pike Lake Elementary

Commercial
--KBJR TV6
--North Shore Bank Place
--Colonial Square
--Edgewater Hotel Waterpark
--Hermantown Plaza
--Holappa Office Building
--Link Snacks Headquarters
--Metro Credit Union
--Midtown Professional Bldg

Cultural
--Nett Lake

Convenience Store
--Bena Community Center
--Bois Forte Public Works
--Leech Lake Early Childhood
--Mille Lacs Gov't Center
--Mille Lacs Housing
--Mille Lacs Wellness Center
--Minishinaakwang
--Nay Ah Shing Renovation
--Bad River Elder Center
--Vermilion Wellness Center

Healthcare/Municipal
--Gnesen Township Fire Hall
--Cornerstone Dental
--Lakeside Dental,

Civil Overview
--WI Dept. of Transportation
--Brule River Bridge
--Eastview Rd Bridge
--North Shore Bank

of Commerce
--Hammond Ave
--Hibbing Taconite Co.
--West Buckhorn Road
--Bluff Creek Bridge
--Ferncliff Park
--Heartland State Trail
--Kirby Plaza

Marine Overview
--Midwest Energy Resources
--Seaway Port Authority
--Raising Panama Barge
--Douglas MacArthur Bridge
--City of Detroit
--Mobile River Terminal
--Denver Water Gross Dam
--Gulf Port Mississippi
--Conoco/Venco
--CN Ore Docks
--Cenex-Harvest
--General Mills
--Interlake Steel Superfund
--Lorain Harbor
--Michigan Island Dock
--P & C Docks
--Port of Erie
--Silver Bay Safe Harbor
--South Wind Maritime

Mechanical & Electrical

Mechanical &
Electrical Overview
--Web Inspection Model (3d)
--Shiploader Fatigue (3d)
--Taconite Ballingdrums (3d)
--Sand Processing Fac. (3d)
--Paper Machine Model (3d)
--Ore Loadout Study (3d)
--Olmsted Dam (3d)
--Limestone Material

Handling Study (3d)
--Flour Load-out Study (3d)
--Fine Ore Surge Conveyor

Study (3d)
--Derrick Screens (3d)
--Dust Collection

System (3d)
--Dust Suppression system
--Seward Storage Facility
-- Minntac

Limestone Unloading
-- Minntac Conversion
--Midwest Energy
--Consumers Energy
--Hallett Dock
--Taconite Harbor
--Color-coded P & IDs

Structural Overview
--Graymont Superior Plant
--Olmsted Dam (3d)
--Interflour Vietnam (3d)
--United Taconite (3d)
--Shiploader Assessment
--Dallas Convention Center
--School District of Superior
--Duluth's Bayfront

Music Pavillion
--Minnesota Slip Bridge

Rail Overview
--Hallet Dock
--Peru Copper
--Gavilon
--Potlatch
--ABC Rail
--NorthShoreScenicRailroad
--CN Bridge Replacement
--CN Rail Siding Extensions
--Cleveland Cliffs-Rail Study
--Hibbing Taconite Co.
--North Shore Mining
--Poly Met DFS Study
--Taconite Harbor-Rail Study
--CN Rail WI

Main Realignment
--Alaskan Railroad's Seward

Storage Facility

Structural Middle School

Concentrator Derrick Screens
Forbes, Minnesota

Project Description: United Taconite is a large pellet plant
operation at Forbes, Minnesota. Their product is taconite pellets, sold and shipped to steel plants around the world. In the
concentrator building crushed ore is milled and screened to extract concentrate for pellet production. This process uses vibratory screens to size the milled ore. The plant currently uses ten Derrick screens in the concentrator. Cliffs Natural Resources (CNR) requested Krech Ojard and Associates (KOA) to provide engineering services for a feasibility study of installing two additional Derrick screens to improve screening rates and efficiency. This study included the development of 3d models to aid in visualization of the equipment. The screens have already been purchased and are currently in storage at
the Fairlane site.

Special Issues and Needs:
3d models were developed as a necessary and productive tool for visualizing space requirements with existing equipment.

Services provided:
Mechanical Engineering
Structural Engineering
3D plant renderings
Project Cost Estimate

Project Scope:
•Operational /
  Maintenance Review
•Derrick Screen
  Installation Design
•Administrative
  Site meetings
  Final reporting

Project Summary:
Cliffs Natural Resources (CNR) requested Krech Ojard and Associates (KOA) to provide engineering services for a feasibility study of installing two additional Derrick screens to improve screening rates and efficiency. This study included the development of 3d models to aid in visualization of the equipment.

telescoping model

Ontario Railroad Announcement

Bad River Elder Center

Graymont Superior

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Mechanical & Electrical

Architecture Dept.