Dawson Geophysical Company (DWSN) provides onshore seismic data acquisition and processing services primarily to oil and gas exploration companies in the US and Canada. The company's business activities are generally permissible under Shariah principles as they support resource extraction without direct involvement in prohibited sectors. All financial screening ratios comfortably pass AAOIFI, MSCI, and S&P thresholds, indicating strong financial compliance. However, due to its small market capitalization, DWSN is not included in any major Shariah-compliant indices, leading to an overall non-compliant classification per index-based determination. Minimal purification of 0.59% is required for any impure income, and the stock merits monitoring for potential future index inclusion as the company grows.