• Separate the reclaimed envelope from saleable plateau area.
• Relate the access programme to the order in which pads can be marketed.
• Use design guidance to connect roads, landscape and individual business plots.
• Compare the four-plateau delivery model with Red Onion's three-pad 2025 programme.
• Distinguish historic investment, current plot readiness and actual tenant demand.

What differs: Oakdale's advertised estate envelope is much larger. Welsh planning and historical European funding are not U.S. programmes. Its older marketing pages do not establish current vacancy, transport frequencies or construction costs.

• Match parcel sizes to local food, forestry, equipment and service businesses.
• Distinguish gross estate area from saleable industrial land.
• Trace how three phases and segregated subphases were funded and delivered.
• Combine business support with utilities and transport access.
• Use a maintained business directory and parcel inventory as marketing evidence.

What differs: The reviewed sources describe municipal land and mining-region funding, not a reclaimed mine at the estate itself. AS-216 frontage and the local food/forestry economy differ from Red Onion's engineered mine-land setting.

• Separate industrial phase boundaries from river and rail barriers.
• Compare agency-led and municipality-led delivery responsibilities.
• Relate plot subdivision to a documented business mix.
• Include shared utilities, streets, maintenance and business information in the marketing package.
• Treat a completed phase and a currently available plot as different claims.

What differs: These are valley-floor estates in a larger urban-industrial corridor, not verified reclaimed mine plateaus. Their established regional business network and agency structure differ from Red Onion.

• Draw river, road and rail constraints before subdividing industrial land.
• Show the access works required to make a plot usable.
• Distinguish gross estate area, industrial plots, streets and green-space allocations.
• Align utility and drainage responsibilities with the phase programme.
• Explain environmental and access constraints honestly in recruitment material.

What differs: Argame is a valley-floor river/highway/rail site, not an established reclaimed mine plateau. Source mining-transition funding does not prove that the land itself was formerly mined.

• Compare gross site boundaries with separately marketed development platforms.
• Link industrial recruitment to skills and regional transport investment.
• Distinguish approved factory proposals from operating businesses.
• Set out landscape buffers and net developable land in site marketing.
• Treat an enterprise-zone designation as one policy tool, not proof of demand.

What differs: Rassau is part of a much larger established manufacturing system. A 1976 parliamentary record describes an expansion on common land, not former mine land; the whole estate's prior use must not be generalized from that record.

• Maintain a parcel-level site inventory that distinguishes controlled gross acreage from ready-to-build lots.
• Document utility capacities, last-mile access, grading, and substation dependencies for each phase.
• Use public funds for defined enabling infrastructure and report grant approval, closure, construction, and completion as different statuses.
• Keep mixed-use housing/commercial phases separate from industrial acreage and jobs reporting.

What differs: Southern Gap is a multi-use redevelopment on a broader 3,153-acre IDA-controlled reclaimed-mined-land area. The specific Red Onion Virginia reference is retained as the requested comparison ID; no unverified acreage or site condition is assigned to it.

• Maintain distinct maps for original industrial property, park boundary, remediated phase, and currently available parcel.
• Coordinate the land steward, regulator, infrastructure operator, and park marketer with explicit transfer conditions.
• Tie public investment claims to the specific parcel and work item rather than the whole regional cleanup program.
• Publish service status and remaining environmental monitoring obligations before marketing a parcel as ready.

What differs: Harbourside is a flat urban waterfront steel-mill reclamation project with non-operational rail infrastructure and nearby deep-water port access. It does not match the Red Onion reference's Appalachian plateau setting. Its relevance is legacy-site reuse, governance, and phased readiness only.