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Signal Hill Petroleum is a Signal Hill, CA-based company in the Energy and Utilities sector.
Export Drilling International is a Whittier, CA-based company in the Energy and Utilities sector.
Columbia Mobil is a Columbia, MD-based company in the Energy and Utilities sector.
Bassetts IGA is a Port Clinton, OH-based company in the Energy and Utilities sector.
Dorchester Minerals, L.P. is a Dallas based owner of producing and non-producing crude oil and natural gas mineral, royalty, overriding royalty, net profits, and leasehold interests and its common units trade on the NASDAQ Global Select Market under the symbol DMLP.