Donora Mining
Operator of record for 29 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Donora Mining is the operator of record for 29 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 0 (0%) are plugged & abandoned. Its largest concentration is in Michigan, with 29 wells (100% of its portfolio).
Wells operated
29
Active
0
Plugged
0
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Michigan | 29 |
Well mix
- Oil wells
- 0
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Donora Mining to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Donora Mining operate?
Donora Mining's catalogued wells are spread across 1 state: Michigan (29). Its 29 Michigan wells are 0.0% of the 85,673 catalogued in that state — its largest share of any state. Counts cover only states whose registries WellCensus has ingested with operator names; wells in Nebraska and Texas (location indexes) and in states without a registry ingest are not yet attributed to any operator.
How many of Donora Mining’s wells are active, plugged or orphaned?
0% of Donora Mining's catalogued wells are active, 29 percentage points below the national share of 29%. 0% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Donora Mining operate?
By product class, 0 (0%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Longyear & Hodge L&H101 in Marquette, MI at 2,363 ft.
Notable wells operated by Donora Mining
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Longyear & Hodge L&H101 | 21-103-03431 | Other status | Other type | Marquette, MI | Donora Mining | 2,363 ft |
| Longyear & Hodge L&H-C2 | 21-103-03425 | Other status | Other type | Marquette, MI | Donora Mining | 1,454 ft |
| Longyear & Hodge L&H111 | 21-103-03439 | Other status | Other type | Marquette, MI | Donora Mining | 1,345 ft |
| Longyear & Hodge L&H105 | 21-103-03435 | Other status | Other type | Marquette, MI | Donora Mining | 1,151 ft |
| Longyear & Hodge L&H103 | 21-103-03433 | Other status | Other type | Marquette, MI | Donora Mining | 1,148 ft |
| Longyear & Hodge L&H119 | 21-103-03446 | Other status | Other type | Marquette, MI | Donora Mining | 970 ft |
| Longyear & Hodge L&H-C3 | 21-103-03426 | Other status | Other type | Marquette, MI | Donora Mining | 956 ft |
| Longyear & Hodge L&H106 | 21-103-03436 | Other status | Other type | Marquette, MI | Donora Mining | 953 ft |
| Longyear & Hodge L&H114 | 21-103-03441 | Other status | Other type | Marquette, MI | Donora Mining | 918 ft |
| Longyear & Hodge L&H118 | 21-103-03445 | Other status | Other type | Marquette, MI | Donora Mining | 850 ft |
| Longyear & Hodge L&H108 | 21-103-03438 | Other status | Other type | Marquette, MI | Donora Mining | 772 ft |
| Longyear & Hodge L&H102 | 21-103-03432 | Other status | Other type | Marquette, MI | Donora Mining | 766 ft |
Deepest first where depth is published. See all 29 wells →
Frequently asked questions
How many wells does Donora Mining operate?
Donora Mining is the operator of record for 29 catalogued oil & gas wells, with the largest concentration in Michigan (29). Only wells in states WellCensus has ingested are counted.
How many of Donora Mining's wells are still active?
0 of Donora Mining's catalogued wells are active; 0 are plugged & abandoned.
In which states does Donora Mining operate wells?
Donora Mining is the operator of record for wells in Michigan (29).
Does Donora Mining operate mostly oil or gas wells?
0 of Donora Mining's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Donora Mining's deepest well?
Among wells with a published depth, Longyear & Hodge L&H101 in Marquette, MI is the deepest at 2,363 ft.
Where Donora Mining's wells are
About this data
Source: State oil & gas regulator registries (operator of record as filed, exact-normalized across states) plus the USGS United States Documented Orphaned Well Database (2026), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Donora Mining — well portfolio”, https://wellcensus.com/operators/donora-mining-129674 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).