# Relationship history for MSHA mine 2601392

Current hierarchy: **Cote Roger → Tripower Inc → Ace Of Spade**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Jupiter Gold Company → Ace Of Spade; 1950-01-01 to 1980-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Leavitt Hafen W Et Al → Ace Of Spade; 1950-01-01 to 1980-05-19; source msha-controller-operator-history
- **controller_controls_operator:** Leavitt Hafen W Et Al → Jupiter Gold Company; 1950-01-01 to 1980-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Marvin  Aslett → Ace Of Spade; 1979-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Circle A Construction Inc → Ace Of Spade; 1980-05-20 to 1995-12-12; source msha-controller-operator-history
- **controller_controls_operator:** Marvin  Aslett → Circle A Construction Inc; 1980-05-20 to 1995-12-12; source msha-controller-operator-history
- **operator_operates_mine:** Tripower Inc → Ace Of Spade; 1995-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cote Roger → Ace Of Spade; 1995-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cote Roger → Tripower Inc; 1995-12-13 to current/open; source msha-controller-operator-history