titleimage rendering of upgrades at a northern minnesota Iron mine

Iron Ore Mine Upgrades

Krech Ojard & Associates has been retained and performed professional services and upgrades on multiple projects for a northern Minnesota iron ore mine.

Read more details in the Description Tab below.


Krech Ojard & Associates has provided a engineering services for a iron ore mine and pellet plant operation in northern Minnesota.

The product is loaded out through two pockets into moving trains. Two types of cars are used to transport the pellets. Traditional ore cars are sized so they may be loaded visually to capacity without overloading. These cars move between the plant and Lake Superior for loading into lake vessels.


Truck and Rail Dump Handling Upgrade

Krech Ojard provided engineering design services for the conversion of the raw ore crusher from rail delivery to truck delivery. This $4 million project was designed for 300 ton capability mine haul trucks. Tunnels and bridges were designed for one-million pound mine haul trucks.

KO also designed the limestone-handling train unloading facility. This facility handles both side and bottom dump cars, features a dust collection system, back-up hydraulic car dumper, underground conveyor and the system was design to feed into the existing crusher.

SAI Scales

The mining facility planned to ship 1,000,000 all rail tons of taconite during a specific January – March time period. For efficiency and safety, improved weighing at the mine loadout was needed to facilitate this ambitious all Rail schedule. KO was directed to investigate and provide a preliminary cost estimate for scale options that would (1) provide the client with certified weights of product loaded, (2) maximize loaded weight per car while preventing overloaded cars, (3) tie car and locomotive information during the loading process, and (4) develop a “fail safe” method that will prevent a collision between the loading chutes and a DP locomotive.

Limestone Material Handling Study

The mining facility’s product requires milled limestone in the agglomerator plant for the production of flux pellets.

KOA provided engineering services for a feasibility study of a new onsite limestone unloading system, storage facility, crusher facility and crushed limestone transfer system.

Services Provided:
Structural Engineering Mechanical Engineering Civil Engineering 3D Plant Renderings Project Cost Estimates Maintenance Scheduling Architectural
Confidential Client
Northern Minnesota
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