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IndustryGlossary Term

Solvent Extraction

A chemical separation process used in oil sands and refining operations to isolate valuable substances from raw material. Field crews may support solvent handling, containment, and equipment maintenance during extraction cycles. Subcontractors working on these sites typically require specialised chemical safety training and PPE compliance.

Related Terms

Preconstruction

Industry

The planning phase before field work begins, covering scope review, site assessments, and schedule alignment with the GC. Subcontractors are often engaged during this phase to provide pricing, labour forecasts, and constructability input. Early involvement can improve mobilisation timelines and reduce costly scope changes later.

Crawler Crane

Industry

A large lifting crane mounted on tracked undercarriage, used for heavy lifts on unstable or soft ground at oil and gas and construction sites. Subcontractors often source these through specialised rigging firms on a day-rate or project basis. Confirm ground-bearing capacity and operator certifications before mobilising.

Radial Telescopic Conveyor

Industry

A mobile conveyor system that extends in length and swings in an arc to stockpile bulk materials across a wide area. Commonly used on pipeline, mining, and civil construction sites for aggregate, gravel, or spoil management. Subcontractors operating this equipment typically require certified operators and may be responsible for setup, teardown, and repositioning.

Telematics

Industry

A system that tracks vehicle and equipment location, usage, and performance data in real time. Subcontractors use it to monitor fleet activity, verify hours worked, and support billing accuracy. It also aids compliance with safety and maintenance requirements.

Lower-Tier Subcontractor

Industry

A company or sole operator hired by a subcontractor, rather than directly by the prime contractor or owner. Lower-tier subs often face delayed payment cycles and reduced contract visibility. Understanding your tier position affects lien rights, insurance requirements, and invoice routing.

MISO (Midcontinent Independent System Operator)

Industry

A regional grid operator managing electricity transmission across central North America. Subcontractors working on power infrastructure or energy facilities in MISO territory must align project schedules with its grid access and outage approval processes. Permitting and energisation timelines are often dictated by MISO interconnection queues.

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