# Relationship history for MSHA mine 3608567

Current hierarchy: **Keel Infrastructure Corp → Scrubgrass Reclamation Company, L.P. → SCRUBGRASS FUEL HANDLING FACILITY**

- 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:** Scrubgrass Reclamation Company, L.P. → SCRUBGRASS FUEL HANDLING FACILITY; 1996-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Environmental Power Corp → SCRUBGRASS FUEL HANDLING FACILITY; 1996-06-01 to 2008-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Environmental Power Corp → Scrubgrass Reclamation Company, L.P.; 1996-06-01 to 2008-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Falcon Power LLC et al → SCRUBGRASS FUEL HANDLING FACILITY; 2008-02-29 to 2022-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Falcon Power LLC et al → Scrubgrass Reclamation Company, L.P.; 2008-02-29 to 2022-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Aspen Scrubgrass Participant LLC et al → Scrubgrass Reclamation Company, L.P.; 2008-02-29 to 2022-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Scrubgrass Power LLC et al → SCRUBGRASS FUEL HANDLING FACILITY; 2022-10-01 to 2025-03-26; source msha-controller-operator-history
- **controller_controls_operator:** Scrubgrass Power LLC et al → Scrubgrass Reclamation Company, L.P.; 2022-10-01 to 2025-03-26; source msha-controller-operator-history
- **controller_controls_operator:** Falcon Power LLC et al → Scrubgrass Reclamation Company, L.P.; 2022-10-01 to 2025-03-26; source msha-controller-operator-history
- **controller_controls_mine:** Keel Infrastructure Corp → SCRUBGRASS FUEL HANDLING FACILITY; 2025-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keel Infrastructure Corp → Scrubgrass Reclamation Company, L.P.; 2025-03-27 to current/open; source msha-controller-operator-history