# Relationship history for MSHA mine 1507195

Current hierarchy: **Collins Lonnie R → Bent Mountain Coal Company Inc → No 6 Mine**

- 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:** May Victor → No 6 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stanley Fonso → No 6 Mine; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fonso Stanley Coal Company → No 6 Mine; 1974-08-01 to 1974-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Stanley Fonso → Fonso Stanley Coal Company; 1974-08-01 to 1974-10-04; source msha-controller-operator-history
- **operator_operates_mine:** J & M Coal Company → No 6 Mine; 1974-10-05 to 1974-12-23; source msha-controller-operator-history
- **controller_controls_mine:** Stanley James & Mitchell → No 6 Mine; 1974-10-05 to 1974-12-23; source msha-controller-operator-history
- **controller_controls_operator:** Stanley James & Mitchell → J & M Coal Company; 1974-10-05 to 1974-12-23; source msha-controller-operator-history
- **operator_operates_mine:** Stanley Coal Company → No 6 Mine; 1974-12-24 to 1975-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Stanley Coal Company → No 6 Mine; 1974-12-24 to 1975-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Stanley Coal Company → Stanley Coal Company; 1974-12-24 to 1975-03-31; source msha-controller-operator-history
- **operator_operates_mine:** May Coal Company → No 6 Mine; 1975-04-01 to 1976-02-05; source msha-controller-operator-history
- **controller_controls_operator:** May Victor → May Coal Company; 1975-04-01 to 1976-02-05; source msha-controller-operator-history
- **operator_operates_mine:** Bent Mountain Coal Company Inc → No 6 Mine; 1976-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Collins Lonnie R → No 6 Mine; 1976-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Collins Lonnie R → Bent Mountain Coal Company Inc; 1976-02-06 to current/open; source msha-controller-operator-history