| Item | Obligations |
|---|---|
| Nonscheduled Chartered Freight Air Transportation | $198M |
| Commercial and Institutional Building Construction | $155M |
| Electronic and Precision Equipment Repair and Maintenance | $137M |
| Highway, Street, and Bridge Construction | $96.9M |
| Engineering Services | $85.4M |
| Support Activities for Forestry | $63.1M |
| Power, Distribution, and Specialty Transformer Manufacturing | $57M |
| Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum) | $47.4M |
| Remediation Services | $40.9M |
| Other Heavy and Civil Engineering Construction | $37.2M |
Nonscheduled Chartered Freight Air Transportation was the largest industry in Montana, with $198M obligated.