# Hitachi Construction Machinery x Rio Tinto revision history

Append-only Arc G field-change log. Forward-only honesty: events accrue from Arc G adoption.

Partnership: [Hitachi Construction Machinery x Rio Tinto](/partnerships/hitachi-construction-machinery-x-rio-tinto.md)

## Recorded posture

- First recorded event: 2025-10-08
- Last material change: 2025-10-08
- Material event count: 1
- Editorial event count: 0

## Material events (1)

- **2025-10-08**: created (source: https://www.hitachicm.com/global/en/news/press-releases/2025/25-10-08/) (verified)

## Forward-only note

Arc G is forward-only. The event log accrues from the Arc G adoption point. Fields with no events post-baseline equal the current cached value and are not independently verified at any prior date.

_Canonical URL: /partnerships/hitachi-construction-machinery-x-rio-tinto/history. REST: /v1/partnerships/3c5e2d08-f968-418c-8cc1-c8c1bcc1f256/history. HTML: [/partnerships/hitachi-construction-machinery-x-rio-tinto/history](/partnerships/hitachi-construction-machinery-x-rio-tinto/history)._