# Relationship history for MSHA mine 3606707

Current hierarchy: **Emanuel A.  Paris → Stefkovich Brothers Inc → Hickory 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:** Petitte Jasper & John Jr--James Barill → Hickory Mine; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M & J Coal Company → Hickory Mine; 1978-07-01 to 1979-08-21; source msha-controller-operator-history
- **controller_controls_operator:** Petitte Jasper & John Jr--James Barill → M & J Coal Company; 1978-07-01 to 1979-08-21; source msha-controller-operator-history
- **operator_operates_mine:** Stefkovich Brothers Inc → Hickory Mine; 1979-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Emanuel A.  Paris → Hickory Mine; 1979-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Emanuel A.  Paris → Stefkovich Brothers Inc; 1979-08-22 to current/open; source msha-controller-operator-history