What does IHGM stand for?
IHGM stands for "Illinois High Grade Mine"
How to abbreviate "Illinois High Grade Mine"?
"Illinois High Grade Mine" can be abbreviated as IHGM
What is the meaning of IHGM abbreviation?
The meaning of IHGM abbreviation is "Illinois High Grade Mine"
What does IHGM mean?
IHGM as abbreviation means "Illinois High Grade Mine"
