# Relationship history for MSHA mine 4609467

Current hierarchy: **Bobby  Justus → Monument Mining, Inc. → Pound Mill Surface 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:** International Industries Inc → Pound Mill Surface Mine; 1977-07-01 to 2007-07-19; source msha-controller-operator-history
- **controller_controls_mine:** International Resources LLC → Pound Mill Surface Mine; 2007-07-20 to 2011-04-17; source msha-controller-operator-history
- **controller_controls_mine:** James River Coal Company → Pound Mill Surface Mine; 2011-04-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Chafin Branch Coal Co, LLC → Pound Mill Surface Mine; 2012-11-01 to 2023-09-07; source msha-controller-operator-history
- **controller_controls_operator:** International Resources LLC → Chafin Branch Coal Co, LLC; 2012-11-01 to 2011-04-17; source msha-controller-operator-history
- **controller_controls_operator:** International Industries Inc → Chafin Branch Coal Co, LLC; 2012-11-01 to 2007-07-19; source msha-controller-operator-history
- **controller_controls_operator:** James River Coal Company → Chafin Branch Coal Co, LLC; 2012-11-01 to 2023-09-07; source msha-controller-operator-history
- **controller_controls_mine:** Bobby  Justus → Pound Mill Surface Mine; 2016-12-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Monument Mining, Inc. → Pound Mill Surface Mine; 2023-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bobby  Justus → Monument Mining, Inc.; 2023-09-08 to current/open; source msha-controller-operator-history