# Relationship history for MSHA mine 0101678

Current hierarchy: **Stanley Arthur T → Stanley Excavating Company Inc → Stanley No 1 Strip**

- 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

- **operator_operates_mine:** Stanley Excavating Company Inc → Stanley No 1 Strip; 1977-03-01 to 1978-12-05; source msha-controller-operator-history
- **controller_controls_mine:** Stanley Arthur T → Stanley No 1 Strip; 1977-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley Arthur T → Stanley Excavating Company Inc; 1977-03-01 to 1978-12-05; source msha-controller-operator-history
- **controller_controls_mine:** Hendrix Thomas E → Stanley No 1 Strip; 1978-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hendrix & Lee Inc → Stanley No 1 Strip; 1978-12-06 to 1979-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Hendrix Thomas E → Hendrix & Lee Inc; 1978-12-06 to 1979-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Stanley Excavating Company Inc → Stanley No 1 Strip; 1979-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley Arthur T → Stanley Excavating Company Inc; 1979-01-15 to current/open; source msha-controller-operator-history