# Relationship history for MSHA mine 1519648

Current hierarchy: **Greg  Damron; Henry  Chaney → Cheyenne Mining INC. → #1 Pit**

- 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:** Greg  Damron  et al → #1 Pit; 2007-10-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cheyenne Mining INC. → #1 Pit; 2012-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Damron  et al → Cheyenne Mining INC.; 2012-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Henry  Chaney  et al → Cheyenne Mining INC.; 2012-02-03 to current/open; source msha-controller-operator-history