Technology / Aviation / Iron Compass: Railroad tracks, favored by pilots of yore as a dependable aid to surface navigation before radio.
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Entertainment / Baseball / Iron Glove: Sloppy fielding; prone to errors. MORE
Science / Geology / Iron Formation: A layered deposit of chemical sedimentary rocks containing at least 15 percent (by weight) iron in the form of sulfide, oxide, hydroxide, or carbonate minerals. MORE
Technology / Aviation / Iron Compass: Railroad tracks, favored by pilots of yore as a dependable aid to surface navigation before radio. MORE
Science / Geology / Iron Ore: A chemical sedimentary rock that forms when iron and oxygen (and sometimes other substances) combine in solution and deposit as a sediment. Hematite is the most common sedimentary iron ore mineral. Pi MORE
Business / Machine Shop / Iron-Carbon Phase Diagram: A graphical means of identifying different structures of steel and percentages of carbon occurring in steel at various temperatures. MORE