# Relationship history for MSHA mine 3606132

Current hierarchy: **Joseph  Kleeman → Sunset Coal Company → Orchard Slope**

- 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:** Orchard Coal Company → Orchard Slope; 1976-07-01 to 1987-07-12; source msha-controller-operator-history
- **controller_controls_mine:** Klinger Ronald & Franklin Lucas → Orchard Slope; 1976-07-01 to 1987-07-12; source msha-controller-operator-history
- **controller_controls_operator:** Klinger Ronald & Franklin Lucas → Orchard Coal Company; 1976-07-01 to 1987-07-12; source msha-controller-operator-history
- **controller_controls_mine:** Joseph  Kleeman  et al → Orchard Slope; 1981-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & K Coal Company → Orchard Slope; 1987-07-13 to 1991-02-20; source msha-controller-operator-history
- **controller_controls_mine:** Cress Charles J & Joseph Kleeman → Orchard Slope; 1987-07-13 to 1993-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Cress Charles J & Joseph Kleeman → C & K Coal Company; 1987-07-13 to 1991-02-20; source msha-controller-operator-history
- **operator_operates_mine:** Consolidated Coal Company → Orchard Slope; 1991-02-21 to 1991-08-04; source msha-controller-operator-history
- **controller_controls_mine:** Wertz Ernest K--Albert Carl Sr Et Al → Orchard Slope; 1991-02-21 to 1991-08-04; source msha-controller-operator-history
- **controller_controls_operator:** Wertz Ernest K--Albert Carl Sr Et Al → Consolidated Coal Company; 1991-02-21 to 1991-08-04; source msha-controller-operator-history
- **operator_operates_mine:** C & K Coal Company → Orchard Slope; 1991-08-05 to 1993-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Cress Charles J & Joseph Kleeman → C & K Coal Company; 1991-08-05 to 1993-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Ashland Coal Company → Orchard Slope; 1993-07-01 to 1994-09-27; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Kleeman  et al → Ashland Coal Company; 1993-07-01 to 1994-09-27; source msha-controller-operator-history
- **operator_operates_mine:** Sunset Coal Company → Orchard Slope; 1994-09-28 to 1994-12-12; source msha-controller-operator-history
- **controller_controls_mine:** Cress Charles-Clair Kehler-James Schlegel → Orchard Slope; 1994-09-28 to 1994-12-12; source msha-controller-operator-history
- **controller_controls_operator:** Cress Charles-Clair Kehler-James Schlegel → Sunset Coal Company; 1994-09-28 to 1994-12-12; source msha-controller-operator-history
- **operator_operates_mine:** Sunset Coal Company → Orchard Slope; 1994-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph  Kleeman  et al → Orchard Slope; 1994-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Kleeman  et al → Sunset Coal Company; 1994-12-13 to current/open; source msha-controller-operator-history