# Relationship history for MSHA mine 1518539

Current hierarchy: **Clearwater Natural Resources LP → Miller Bros. Coal, LLC. → Hurican Br. 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:** Jeff  Joyce → Hurican Br. Surface Mine; 1998-03-01 to 2004-07-11; source msha-controller-operator-history
- **operator_operates_mine:** Knott Floyd Land Company Inc. → Hurican Br. Surface Mine; 2002-04-18 to 2006-05-09; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Joyce → Knott Floyd Land Company Inc.; 2002-04-18 to 2004-07-11; source msha-controller-operator-history
- **controller_controls_mine:** M Lynn  Parrish → Hurican Br. Surface Mine; 2004-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** M Lynn  Parrish → Knott Floyd Land Company Inc.; 2004-07-12 to 2006-05-09; source msha-controller-operator-history
- **controller_controls_mine:** Clearwater Natural Resources LP → Hurican Br. Surface Mine; 2005-08-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Miller Bros. Coal, LLC. → Hurican Br. Surface Mine; 2006-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clearwater Natural Resources LP → Miller Bros. Coal, LLC.; 2006-05-10 to current/open; source msha-controller-operator-history