What is iron ore?
Which is stronger, iron or steel
Steel
What is the biggest resource in Minnesota?
water
Most of Minnesota’s iron ore is less than _____ miles from Lake Superior
100
Something important to the industries success is __________
Shipping
Electric shovels replaced ______ powered shovels.
Steam
how many people did it take to use an electric powered shovel?
1
Can acid melt iron?
No
name 3 industry essentials
heavy machinery, expendable consumables, and rigorous safety protocols
How many people worked in the mines?
Thousands
What temperature does iron ore melt at? (triple points if last)
2800 degrees F
Can iron ore be found Minnesota?
Yes
Is iron ore stronger than gold ore?
Yes
name 4 mining machines
surface mining machines (for open-pit sites) and underground mining machines (for tunnels and deep shafts)
how many people did it take to make a railroad?
an estimated 20,000 laborers
What is Minnesota‘s least common resource?
precious metals (gold, platinum) and rare-earth minerals
how many machines were in the mining industry?
155,976 machines