# Relationship history for MSHA mine 3608346

Current hierarchy: **Frank  Krammes → Carline Coal Co. Inc. → Primrose 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:** E & E Fuels → Primrose Slope; 1992-06-01 to 1997-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Graver et al → Primrose Slope; 1992-06-01 to 1997-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Graver et al → E & E Fuels; 1992-06-01 to 1997-04-06; source msha-controller-operator-history
- **operator_operates_mine:** Rustler Coal Company → Primrose Slope; 1997-04-07 to 2003-02-02; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Miller et al → Primrose Slope; 1997-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Miller et al → Rustler Coal Company; 1997-04-07 to 2003-02-02; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Graver et al → Rustler Coal Company; 1997-04-07 to 2003-02-02; source msha-controller-operator-history
- **operator_operates_mine:** Orchard Coal Company → Primrose Slope; 2003-02-03 to 2010-05-06; source msha-controller-operator-history
- **controller_controls_mine:** David S  Himmelberger → Primrose Slope; 2003-02-03 to 2007-11-27; source msha-controller-operator-history
- **controller_controls_operator:** David S  Himmelberger → Orchard Coal Company; 2003-02-03 to 2007-11-27; source msha-controller-operator-history
- **controller_controls_mine:** Kerry  Harris → Primrose Slope; 2007-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kerry  Harris → Orchard Coal Company; 2007-11-28 to 2010-05-06; source msha-controller-operator-history
- **operator_operates_mine:** Carline Coal Co. Inc. → Primrose Slope; 2010-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Frank  Krammes → Primrose Slope; 2010-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank  Krammes → Carline Coal Co. Inc.; 2010-05-07 to current/open; source msha-controller-operator-history