https://www.epa.gov/environmental-geophysics/general-crosshole-procedures
General Crosshole Procedures | US EPA
Oct 1, 2025 - The primary purpose of obtaining crosshole data is to obtain the most detailed in situ seismic wave velocity profile for site-specific investigations and...
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https://cheeron.en.made-in-china.com/product-group/NbDtgTvuXlcW/Crosshole-Sonic-Logging-Tube-catalog-1.html
Crosshole Sonic Logging Tube - Changzhou Cheeron Construction Machinery Equipment Co., Ltd. - page...
China Crosshole Sonic Logging Tube catalog of Factory Cross Sonic Logging Pipe 3-12m CSL Tubes for Concrete Pile Testing, Wholesale 50-60mm Cross Sonic Logging...
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