# Relationship history for MSHA mine 0102205

Current hierarchy: **Cupps T S → Aa Mining Inc → Briceston**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Holland J T → Briceston; 1979-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Aa Mining Inc → Briceston; 1980-05-01 to 1981-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Holland J T → Aa Mining Inc; 1980-05-01 to 1981-07-26; source msha-controller-operator-history
- **operator_operates_mine:** Aa Mining Inc → Briceston; 1981-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cupps T S → Briceston; 1981-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cupps T S → Aa Mining Inc; 1981-07-27 to current/open; source msha-controller-operator-history