walking dragline
Very LowTechnical/Industrial
Definition
Meaning
An extremely large, mobile excavation machine used in surface mining, typically for removing overburden to access coal or minerals. It has a large boom and bucket system and moves on large "feet" or pads.
In broader usage, the term can metaphorically describe any large, slow-moving, and powerful entity or system, though this is rare. It remains a highly specific technical term.
Linguistics
Semantic Notes
A compound noun where 'walking' refers to its unique method of locomotion (lifting and placing its base) and 'dragline' refers to the type of excavating bucket that is dragged towards the machine. It is a type of power shovel.
Dialectal Variation
British vs American Usage
Differences
The term is identical in both variants. The technology and terminology are international in the mining industry.
Connotations
Industrial, heavy engineering, large-scale excavation, often associated with open-pit coal mining in places like Wyoming (USA) or Queensland (Australia).
Frequency
Equally rare in both dialects, confined to mining, civil engineering, and heavy machinery contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
The [walking dragline] removed [the overburden].[Company Name] operates [a walking dragline] at [the mine].Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[No common idioms. Term is too technical.]”
Usage
Context Usage
Business
In reports or discussions of capital equipment, mining costs, and large-scale project logistics.
Academic
In engineering, geology, or mining technology textbooks and papers.
Everyday
Virtually never used in everyday conversation outside specific communities.
Technical
The primary context. Used in engineering specifications, mining plans, and equipment manuals.
Examples
By Part of Speech
verb
British English
- The crew will be walking the dragline to the new cut over the weekend.
- It takes skilled operators to walk the dragline safely.
American English
- They need to walk the dragline to the next site before the storm hits.
- Walking a dragline is a precise and slow operation.
adverb
British English
- [Not applicable. The term is not used as an adverb.]
American English
- [Not applicable. The term is not used as an adverb.]
adjective
British English
- The walking-dragline operator checked the hydraulic systems.
- They reviewed the walking-dragline specifications.
American English
- The walking dragline component was shipped from Ohio.
- He specialized in walking dragline maintenance.
Examples
By CEFR Level
- The big machine is called a walking dragline.
- A walking dragline is used in big mines to move a lot of earth.
- The massive walking dragline slowly moved across the mine site to begin removing the overburden.
- Due to its unparalleled efficiency in overburden removal, the walking dragline remains a critical, albeit enormous, capital investment for many surface coal mines.
Learning
Memory Aids
Mnemonic
Imagine a giant metal insect that WALKS on big feet, DRAGGING a huge bucket LINE behind it to scoop up earth.
Conceptual Metaphor
A MACHINE IS A GIANT (walking, eating/consuming earth).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not translate 'walking' as 'гуляющий' (strolling). It's 'шагающий' or 'передвижной'. 'Dragline' is not just a 'линия' (line) but a 'драглайн' (direct borrowing) or 'канатный скрепер'.
Common Mistakes
- Using 'walking dragline' to refer to any large truck or non-walking excavator.
- Misspelling as 'walking drag line' (two words for 'dragline').
Practice
Quiz
What is the primary function of a walking dragline?
FAQ
Frequently Asked Questions
It uses large hydraulic or electric-powered shoes or pads. The machine lifts its entire structure, moves the pad forward, sets it down, and then pulls the rest of the base forward, resembling a slow, shuffling gait.
No. While both are colossal surface mining machines, a walking dragline uses a single large bucket suspended from a boom, whereas a bucket-wheel excavator uses a continuous rotating wheel with multiple buckets.
Primarily in large-scale open-pit mining operations, especially for coal in regions like the Powder River Basin (USA) or Central Queensland (Australia), where large areas of overburden need to be removed.
Because the bucket is attached to the boom by a hoist rope and is dragged (or pulled) along the ground towards the machine to fill it with material, as opposed to being pushed like a shovel.