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Sonic Drill Corporation Tel. +1-604-588-6081 | Email: [email protected] Website: http://sonic-drill.com Coring DRY in unconsolidated material without the need for water or drilling mud is no easy feat and one that only a sonic drill rig can do. In this video, watch as an SDC-450 sonic rig uses a 4.25" ID single wall core barrel (5 ft. long) and a 4.25" core bit to dry core. Using high frequency vibrations to produce accurate and almost totally undisturbed core samples from both solid and unconsolidated materials, core samples can range from 3" to 10" in diameter. In this demonstration, three continuous samples are taken from the surface to 15 ft below. The recovery rate is in excess of 95%. Cores are held in the core barrel by friction and/ or by the use of core catchers as required. Typically, core samples are gently extruded by vibration into plastic sleeves for examination and recording. Compressed air is available to assist with core extraction, if necessary. Update: Please note new contact info at top of description. Video has old phone numbers.