Check the listing for details. Thin-section Mount from DSDP Hole 292 Petrographic Microscope Slide 31-292-45-3. Listed at 45.00 USD. Thin-section mount of core sample from the Deep Sea Drilling Project (DSDP) Leg 31, Hole 292, Core 45-3, Benham Rise in West Philippine Sea. For viewing under transmitted or polarized light.