# ULC Technologies x SGN x TfL (AUSMOS) revision history

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

Partnership: [ULC Technologies x SGN x TfL (AUSMOS)](/partnerships/ulc-sgn-tfl-ausmos.md)

## Recorded posture

- First recorded event: 2023-01-01
- Last material change: 2023-01-01
- Material event count: 1
- Editorial event count: 0

## Material events (1)

- **2023-01-01**: created (source: https://ulctechnologies.com/robotic-system-for-underground-utility-damage-prevention/) (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/ulc-sgn-tfl-ausmos/history. REST: /v1/partnerships/5c4fda71-2dd9-471d-b403-aec0d2c65aff/history. HTML: [/partnerships/ulc-sgn-tfl-ausmos/history](/partnerships/ulc-sgn-tfl-ausmos/history)._