# Relationship history for MSHA mine 4103116

Current hierarchy: **JFB Inc → Old Soldier Ltd → Pecos Plant**

- 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:** Mahoney Stanford R → Pecos Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** All Minerals Corp → Pecos Plant; 1982-05-01 to 1987-03-15; source msha-controller-operator-history
- **controller_controls_operator:** Mahoney Stanford R → All Minerals Corp; 1982-05-01 to 1987-03-15; source msha-controller-operator-history
- **operator_operates_mine:** Dyna Materials Inc → Pecos Plant; 1987-03-16 to 1988-02-29; source msha-controller-operator-history
- **controller_controls_mine:** Bledsoe Gordon L → Pecos Plant; 1987-03-16 to 1988-02-29; source msha-controller-operator-history
- **controller_controls_operator:** Bledsoe Gordon L → Dyna Materials Inc; 1987-03-16 to 1988-02-29; source msha-controller-operator-history
- **operator_operates_mine:** Old Soldier Ltd → Pecos Plant; 1988-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** JFB Inc et al → Pecos Plant; 1988-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** JFB Inc et al → Old Soldier Ltd; 1988-03-01 to current/open; source msha-controller-operator-history