Following is a list of companies that you might be interested in for internships and careers after graduation. All company data is publically available.
| Company | Note 1 | Address | City | State | Zip | Where to Watch / Apply |
|---|---|---|---|---|---|---|
| AspenAir | Yes | 1524 Lockwood Road | Billings | MT | 59101 | https://www.linkedin.com/company/aspen-air-corp/about/ |
| BP Cherry Point Refinery | 4519 Grandview Rd | Blaine | WA | 98230 | https://www.bp.com/en/global/corporate/careers.html | |
| Calumet Montana Refining, LLC | 1900 10th Street NE | Great Falls | MT | 59404 | https://www.calumetspecialty.com/useful-links/careers/ | |
| Cenex Refinery | Yes | 803 Highway 212 South, PO Box 909 | Laurel | MT | 59044 | https://www.chsinc.com/careers |
| Clean Water Treatment Plant | Yes | 2251 Belknap Ave | Billings | MT | 59101 | https://ci.billings.mt.us/Jobs.aspx |
| ConocoPhillips | 2101 Overland Avenue | Billings | MT | 59102 | https://careers.conocophillips.com/ | |
| Dakota Gasification Company | Yes | 420 County Road 26 | Beulah | ND | 58523 | https://dakotagas.com/about-us/jobs |
| Dakota Prairie Refinery | 3815 116th Ave. S.W. | Dickinson | ND | 58601 | https://www.marathonoil.com/ | |
| ExxonMobil | Yes | 700 Exxonmobil Rd | Billings | MT | 59101 | https://jobs.exxonmobil.com/ |
| GTUIT | Yes | 404 N. 31st Street, Suite 227 | Billings | MT | 59102 | http://gtuit.com/careers/?locale=en |
| Holly Oil | 1070 West 500 South | West Bountiful | UT | 84087 | https://www.hollyfrontier.com/careers/default.aspx | |
| Jupiter Sulfur | Yes | 2210 7th Ave S | Billings | MT | 59101 | https://www.linkedin.com/company/jupiter-sulphur-llc/about/ |
| Kinder Morgan | Yes | 1001 Louisiana St., Suite 1000 | Houston | TX | 77002 | https://www.kindermorgan.com/Careers/Job-Opportunities |
| Koch Industries | Yes | P.O. Box 2256 | Wichita | KS | 67201 | https://www.kochind.com/ |
| Mandan Refinery | 500 Old Red Trail NE | Mandan | ND | 58554 | https://www.marathonoil.com/ | |
| Montana Sulfur and Chemical | Yes | 627 ExxonMobil Road | Billings | MT | 59101 | https://montanasulphur.com/contact/employment-opportunities/ |
| NorthWestern Energy Hydro | Yes | HR Department, 3010 West 69th Street | Sioux Falls | SD | 57108 | https://northwesternenergy.applicantpro.com/jobs/ |
| Nutrien | Yes | Suite 500 122 - 1st Avenue South | Saskatoon, SK | https://www.nutrien.com/careers/job-postings | ||
| ONEOK | Yes | 100 W. Fifth Street | Tulsa | OK | 74103 | https://www.oneok.com/careers |
| Phillips 66 | Yes | 401 South 23rd Street | Billings | MT | 59101 | https://phillips66.jobs/jobs/ |
| PPL Montana | Po Box 30495 | Billings | MT | 59107 | https://www.pplweb.com/careers/ | |
| Shell Anacortes Refinery | 8505 S Texas Rd, | Anacortes | WA | 98221 | https://www.shell.com/careers.html | |
| Sinclair Refinery | Yes | P.O. Box 277 | Sinclair | WY | 82334 | https://www.sinclairoil.com/careers |
| Sinclair Casper Refinery | 5700 East Highway 20-26 | Casper | WY | 82609 | https://www.sinclairoil.com/careers | |
| Stillwater Mining Co | Yes | PO Box 1209 | Columbus | MT | 59019 | https://www.sibanyestillwater.com/careers/ |
| Tessenderlo Kerley | Yes | 2910 N 44th St, Ste 100 | Phoenix | AZ | 85018 | https://careers.smartrecruiters.com/TessenderloGroup/tessenderlokerleyinc |
| Think Environmental | Yes | 905 Gemini St. | Houston | TX | 77058 | https://thinkenvironmental.com/careers/ |
| Valero | 1 Valero Way | San Antonio | TX | 78249 | https://www.valero.com/careers | |
| Viridis Chemical | 3309 EAST 8TH STREET | Columbus | NE | 68601 | https://prairiecatalytic.com/careers/ | |
| Wastewater Treating Plant | Yes | 725 Highway 87 East, PO Box 30958 | Billings | MT | 59111 | https://ci.billings.mt.us/Jobs.aspx |
| Western Emulsions | Yes | 7315 Mossmain Ln | Billings | MT | 59102 | https://www.linkedin.com/company/western-emulsions/jobs/ |
| Western Sugar | 7555 East Hampden Avenue, Suite 520 | Denver | CO | 80231 | https://www.westernsugar.com/careers/ | |
| Western Sugar Billings Seasonal | Yes | 3020 State Ave | Billings | MT | 59101 | https://www.westernsugar.com/careers/seasonal-billings/ |
| Wyoming Bentonite | PO Box 1979 | Billings | MT | 59102 | https://www.wyoben.com/ |