"iron mining" is a correct and usable phrase in written English.
You can use it any time you need to refer to the process of extracting iron ore from the ground. For example, "Due to increasing demand for steel, iron mining is becoming increasingly popular in many parts of the world."
Industries include iron mining, woodworking, and papermaking.
Iron mining began in the mid-18th century.
Napier Mine and Metal Ford in Tennessee hark back to frontier iron mining and smelting.
Prior to the American Civil War the area was a centre of iron mining and smelting.
Iron mining was important from the 17th century to the end of the 19th.
Iron mining spurred the early development of the county, notably in Morristown, the county seat.
The Scene A former lumber and iron-mining town, Plymouth is also one of the country's best-preserved presidential sites.
Besides being the heart of the American iron-mining industry, the Iron Range is a historic center of the American labor movement.
A member of an old iron-mining family, Werner worked with his father for five years in the ironworks at Wehrau and Lorzendorf.
Located in the Bomi Hills, a former iron-mining district, it was long associated with the Liberian Mining Company (LMC; a subsidiary of Republic Steel Corporation), which closed down mining operations in the late 1970s.
In his piece, McGrath gives this overview: The Ramapoughs number a few thousand, marry largely among themselves, and are concentrated in three primary settlements: on and around Stag Hill, in Mahwah; in the village of Hillburn, New York, in the hollow below Stag Hill's northern slope; and, west of Stag Hill, in Ringwood, New Jersey, in the remains of an old iron-mining complex.
