# Relationship history for MSHA mine 4607178

Current hierarchy: **Sev.en Global Investments a.s. → Panther Creek Mining LLC → Samples 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:** Lawson W  Hamilton Jr → Samples Surface Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ford Coal Company → Samples Surface Mine; 1986-08-01 to 1989-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Lawson W  Hamilton Jr → Ford Coal Company; 1986-08-01 to 1989-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Catenary Coal Company LLC → Samples Surface Mine; 1989-08-01 to 2015-10-25; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc et al → Samples Surface Mine; 1989-08-01 to 2005-12-30; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc et al → Catenary Coal Company LLC; 1989-08-01 to 2005-12-30; source msha-controller-operator-history
- **controller_controls_mine:** Magnum Coal Company → Samples Surface Mine; 2005-12-31 to 2008-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Magnum Coal Company → Catenary Coal Company LLC; 2005-12-31 to 2008-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Samples Surface Mine; 2008-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Catenary Coal Company LLC; 2008-07-23 to 2015-10-25; source msha-controller-operator-history
- **operator_operates_mine:** Panther Creek Mining LLC → Samples Surface Mine; 2015-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Blackhawk Mining LLC → Samples Surface Mine; 2015-10-26 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Blackhawk Mining LLC → Panther Creek Mining LLC; 2015-10-26 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Sev.en Global Investments a.s. → Samples Surface Mine; 2020-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sev.en Global Investments a.s. → Panther Creek Mining LLC; 2020-06-01 to current/open; source msha-controller-operator-history