drill steel
- noun
- Specialized
- Some mining operations require a specialized drill steel to penetrate particularly hard rock formations.
Examples
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The construction crew replaced the worn drill steel to improve the performance of their rock drill.
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For safety reasons, always inspect your drill steel before beginning any blasting operation.
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The drill steel broke during the operation!
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We need more drill steel!
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In order to reach the buried minerals, the geologists opted for a higher quality drill steel designed for tough rock conditions.
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The mining crew always used a premium drill steel to ensure effective drilling in the hardest sections of the mine.
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Before starting the excavation, the workers checked the drill steel to ensure it was suitable for the granite they would encounter.
Synonyms
Hard strong steel used to make blades and parts that stay sharp
A strong steel bar used in drills and machines that work under high pressure
Surface Forms
Morphology
The compound simply names the type of steel associated with drills — 'drill' (tool) + 'steel' (metal) — so its meaning (steel used for drill bits/rods) is directly derivable from the constituents. Although it is a technical term, the noun+noun composition follows a common, transparent pattern that a B1 learner who knows both words would readily infer.
Etymology
Drill steel comes from the simple image of hard steel made into a long rod that fits into a rock drill and is forced into the rock again and again. So the name now means 'a strong carbon steel used to make rods or bits for rock drills and dowels'.