# Relationship history for MSHA mine 1518262

Current hierarchy: **M Lynn  Parrish → Knott Floyd Land Co., Inc. → Triplett Branch**

- 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 → Triplett Branch; 1998-03-01 to 2004-07-11; source msha-controller-operator-history
- **operator_operates_mine:** Eagle Ridge Mining Inc → Triplett Branch; 2000-06-01 to 2002-11-20; source msha-controller-operator-history
- **controller_controls_mine:** Jody  Samons → Triplett Branch; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jody  Samons → Eagle Ridge Mining Inc; 2000-06-01 to 2002-11-20; source msha-controller-operator-history
- **operator_operates_mine:** Knott Floyd Land Co., Inc. → Triplett Branch; 2002-11-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Joyce → Knott Floyd Land Co., Inc.; 2002-11-21 to 2004-07-11; source msha-controller-operator-history
- **controller_controls_mine:** M Lynn  Parrish → Triplett Branch; 2004-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** M Lynn  Parrish → Knott Floyd Land Co., Inc.; 2004-07-12 to current/open; source msha-controller-operator-history