# Relationship history for MSHA mine 3606440

Current hierarchy: **Ronald  Lickman → Harriman Coal Corporation → Goodspring No. 1 East Operation**

- 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:** South Field Coal Company → Goodspring No. 1 East Operation; 1977-06-01 to 1978-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Freedom Energy Corp-Expressway Coal Co Et Al → Goodspring No. 1 East Operation; 1977-06-01 to 1978-03-29; source msha-controller-operator-history
- **controller_controls_operator:** Freedom Energy Corp-Expressway Coal Co Et Al → South Field Coal Company; 1977-06-01 to 1978-03-29; source msha-controller-operator-history
- **operator_operates_mine:** Barren Coal Company Inc → Goodspring No. 1 East Operation; 1978-03-30 to 1990-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Padinske Edward → Goodspring No. 1 East Operation; 1978-03-30 to 1990-04-19; source msha-controller-operator-history
- **controller_controls_operator:** Padinske Edward → Barren Coal Company Inc; 1978-03-30 to 1990-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Ronald  Lickman → Goodspring No. 1 East Operation; 1984-07-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Harriman Coal Corporation → Goodspring No. 1 East Operation; 1990-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald  Lickman → Harriman Coal Corporation; 1990-04-20 to current/open; source msha-controller-operator-history