Charles Holston offers a huge spectrum of services for land-based oil and gas operations, as well as offshore tank and vessel cleaning, offshore painting and blasting, environmental services and equipment rental. The company is a subsidiary of OMNI Energy Services, one of the largest diversified seismic support companies in the United States. The company provides a range of services to geophysical, exploration and production companies engaged in the acquisition of 3-D onshore seismic data. Its primary activity is the drilling and loading of source points for seismic analysis. In addition, OMNI surveys drilling sites and fabricates and maintains drilling equipment. The company s services are organized into business units that include seismic drilling, international operations, permitting, survey and specialized equipment rentals. Charles Holston maintains a location in Jennings, La.