# Relationship history for MSHA mine 4606902

Current hierarchy: **Trompak Charles → J A L Coal Company Inc → Little John 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:** John A  Laurita → Little John Mine; 1984-01-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Little Falls Mining Inc → Little John Mine; 1985-02-01 to 1986-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Brooks Harvey → Little John Mine; 1985-02-01 to 1986-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Brooks Harvey → Little Falls Mining Inc; 1985-02-01 to 1986-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Little Falls Mining Company Inc → Little John Mine; 1986-03-01 to 1990-07-17; source msha-controller-operator-history
- **controller_controls_mine:** Hardesty John R Jr-Larry A Myers Et Al → Little John Mine; 1986-03-01 to 1990-09-03; source msha-controller-operator-history
- **controller_controls_operator:** Hardesty John R Jr-Larry A Myers Et Al → Little Falls Mining Company Inc; 1986-03-01 to 1990-07-17; source msha-controller-operator-history
- **operator_operates_mine:** Morningside Development Corp → Little John Mine; 1990-07-18 to 1991-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Crane James Douglas → Little John Mine; 1990-07-18 to 1991-03-11; source msha-controller-operator-history
- **controller_controls_operator:** Crane James Douglas → Morningside Development Corp; 1990-07-18 to 1991-03-11; source msha-controller-operator-history
- **operator_operates_mine:** J A L Coal Company Inc → Little John Mine; 1991-03-12 to 1995-03-12; source msha-controller-operator-history
- **controller_controls_operator:** John A  Laurita → J A L Coal Company Inc; 1991-03-12 to 1995-03-12; source msha-controller-operator-history
- **operator_operates_mine:** J A L Coal Company Inc → Little John Mine; 1995-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Trompak Charles → Little John Mine; 1995-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Trompak Charles → J A L Coal Company Inc; 1995-03-13 to current/open; source msha-controller-operator-history