# Relationship history for MSHA mine 4604737

Current hierarchy: **Jasper  Petitte; John  Petitte Jr → Sand-Ridge Coal Company Inc → M & J No 4**

- 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:** M & J Coal Company → M & J No 4; 1975-01-01 to 1986-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Petitte Jasper & John Jr--James Barill → M & J No 4; 1975-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Petitte Jasper & John Jr--James Barill → M & J Coal Company; 1975-01-01 to 1986-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Sand-Ridge Coal Company Inc → M & J No 4; 1986-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Petitte Jr et al → M & J No 4; 1986-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Petitte Jr et al → Sand-Ridge Coal Company Inc; 1986-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jasper  Petitte et al → Sand-Ridge Coal Company Inc; 1986-07-01 to current/open; source msha-controller-operator-history