| Cupel tongs are adequate for moving bigger range of cupels used in ore analysis. |
| The Mesabi Iron Range contains some 110 miles of small towns built at the turn of the last century along a seam of iron ore called taconite. |
| The high-grade ore carried 100-400 ounces of silver and 0.5-3 ounces of gold. |
| China has been restructuring its steel industry, increasingly replacing low-grade domestic iron ore with imported iron ore of better quality. |
| The remnant ore inside the old stopes, pillars and tailings used as backfilling are being leached with mild acid solution. |
| The kind of ore that attracted iron was once called magnesian stone, because it was discovered in the part of Asia Minor near Magnesia. |
