# Relationship history for MSHA mine 4202199

Current hierarchy: **Jackson Terrance C → Terrance C Jackson Construction → TERRY JACKSON CONSTRUCTION**

- 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:** Terrance C Jackson Construction → TERRY JACKSON CONSTRUCTION; 1998-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jackson Terrance C → TERRY JACKSON CONSTRUCTION; 1998-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jackson Terrance C → Terrance C Jackson Construction; 1998-05-01 to current/open; source msha-controller-operator-history