# Relationship history for MSHA mine 4300447

Current hierarchy: **Charles  Gilman → W B Rogers Inc → ROGERS PIT**

- 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:** Hummel Construction → ROGERS PIT; 1990-02-01 to 1996-05-29; source msha-controller-operator-history
- **controller_controls_mine:** Paul D  Hummel → ROGERS PIT; 1990-02-01 to 1996-07-15; source msha-controller-operator-history
- **controller_controls_operator:** Paul D  Hummel → Hummel Construction; 1990-02-01 to 1996-05-29; source msha-controller-operator-history
- **operator_operates_mine:** W B Rogers Inc → ROGERS PIT; 1996-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Gilman → ROGERS PIT; 1996-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Gilman → W B Rogers Inc; 1996-05-30 to current/open; source msha-controller-operator-history