# Relationship history for MSHA mine 2200809

Current hierarchy: **Rodney  Grogan; Huey P Stockstill Jr. → Huey P Stockstill LLC → Santa Rosa 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:** Richard  Stockstill  et al → Santa Rosa Mine; 1995-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hutchinson Island Mining Corp. → Santa Rosa Mine; 2012-10-05 to 2015-08-27; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Stockstill  et al → Hutchinson Island Mining Corp.; 2012-10-05 to 2015-08-27; source msha-controller-operator-history
- **controller_controls_operator:** Huey  Stockstill  et al → Hutchinson Island Mining Corp.; 2012-10-05 to 2015-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Huey P Stockstill LLC → Santa Rosa Mine; 2015-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Huey P Stockstill Jr. et al → Santa Rosa Mine; 2015-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Huey P Stockstill Jr. et al → Huey P Stockstill LLC; 2015-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney  Grogan et al → Huey P Stockstill LLC; 2015-08-28 to current/open; source msha-controller-operator-history