Operational status verification assesses whether a site appears active, expanding, idle, disrupted, or materially changed based on externally observable indicators. This work is useful where independent visibility matters, claims are difficult to verify directly, or a current view of site conditions is needed to support internal review.

Operational Status Verification

Assessing Operational Activity at POSCO Pohang Steelworks

A multi-source satellite case study combining stockpile detection, thermal anomaly analysis, and built-up footprint change to assess operational activity between 2019 and 2025.

Thermal satellite comparison of POSCO Pohang steelworks showing persistent heat anomaly

The Challenge

Large industrial facilities can remain active even when optical yard conditions fluctuate. Seasonal differences, image brightness, and atmospheric conditions can also distort stockpile and vegetation estimates, making single-source interpretation unreliable.

Our Approach

The analysis combined optical material detection, thermal infrared assessment, and built-up footprint monitoring within the facility and surrounding buffer zones. Together, these signals provided a more balanced view of operational status than any one metric alone.

Why This Matters

This type of workflow can support remote industrial monitoring for investors, insurers, supply-chain teams, and compliance functions where site access is limited.

Key Findings

Sustained thermal anomaly indicated continued industrial heat generation.
Built-up area increased over the analysis period.
Visible stockpile detection fell sharply, but this signal was seasonally sensitive.
Overall evidence pointed to continued moderate activity, not shutdown.

Need an independent view of industrial activity at a remote site?

We support facility-level monitoring using multi-source satellite analysis.

Intro

We used Sentinel-2 and Landsat imagery to assess whether the POSCO Pohang steelworks remained operational and how the site changed over time. The result was an Operational Activity Index of 60.9/100, indicating moderate activity supported primarily by sustained thermal and infrastructure signals.

Side-by-side satellite views of POSCO Pohang steelworks in 2019 and 2025 with facility boundary

If the situation is complex, sensitive, or difficult to move forward with confidence, we would be glad to explore whether an initial conversation would be useful.