# Relationship history for MSHA mine 4401717

Current hierarchy: **Perry Allen  Whited → A & N Coal Company Inc → Raven No 1 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Raven Smokeless Coal Company → Raven No 1 Mine; 1950-01-01 to 1975-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Lipps Robert → Raven No 1 Mine; 1950-01-01 to 1975-03-11; source msha-controller-operator-history
- **controller_controls_operator:** Lipps Robert → Raven Smokeless Coal Company; 1950-01-01 to 1975-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Samuels John S Iii → Raven No 1 Mine; 1974-11-08 to 1977-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Raven Smokeless Coal Company Inc → Raven No 1 Mine; 1975-03-12 to 1976-09-20; source msha-controller-operator-history
- **controller_controls_operator:** Samuels John S Iii → Raven Smokeless Coal Company Inc; 1975-03-12 to 1976-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Gulf + Western Industries Inc & Raven Smokeless Co → Raven No 1 Mine; 1976-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Raven Anchor Smokeless Coal Company → Raven No 1 Mine; 1976-09-21 to 1979-05-30; source msha-controller-operator-history
- **controller_controls_operator:** Gulf + Western Industries Inc & Raven Smokeless Co → Raven Anchor Smokeless Coal Company; 1976-09-21 to 1979-05-30; source msha-controller-operator-history
- **operator_operates_mine:** Koch Carbon Inc → Raven No 1 Mine; 1979-05-31 to 1994-11-03; source msha-controller-operator-history
- **controller_controls_mine:** Koch Industries Inc → Raven No 1 Mine; 1979-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Koch Industries Inc → Koch Carbon Inc; 1979-05-31 to 1994-11-03; source msha-controller-operator-history
- **operator_operates_mine:** A & N Coal Company Inc → Raven No 1 Mine; 1994-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Perry Allen  Whited → Raven No 1 Mine; 1994-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Perry Allen  Whited → A & N Coal Company Inc; 1994-11-04 to current/open; source msha-controller-operator-history