# Relationship history for MSHA mine 1516330

Current hierarchy: **Browning Ted R → Eric Mining Incoprorated → Wet Rock No 1**

- 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:** Homestead Colleries Corp → Wet Rock No 1; 1988-03-01 to 1988-06-19; source msha-controller-operator-history
- **controller_controls_mine:** Carter Robert → Wet Rock No 1; 1988-03-01 to 1988-06-19; source msha-controller-operator-history
- **controller_controls_operator:** Carter Robert → Homestead Colleries Corp; 1988-03-01 to 1988-06-19; source msha-controller-operator-history
- **operator_operates_mine:** Eric Mining Incoprorated → Wet Rock No 1; 1988-06-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Browning Ted R → Wet Rock No 1; 1988-06-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Browning Ted R → Eric Mining Incoprorated; 1988-06-20 to current/open; source msha-controller-operator-history