Rick, Craig Tester, David Irving, and the team meet in the War Room with Marty and Vanessa Lucido by video conference to plan the placement of ten-foot caissons in the Money Pit. The Irving team has been coordinating with ROC Equipment to secure the necessary machinery, including a larger hammer grab. The caissons will target areas where the team has recovered metal fragments, wood dating to as early as 1488, and water samples containing gold and silver. Scott Barlow asks about the size of the hammer grab, and the group discusses the volume of material that will need to pass through the wash plant and the water required to process it. When Marty asks when the cans can go in, Rick says they need four to six more weeks of drilling to gather enough data, and Craig confirms the plan calls for four shafts in the area.
On Lot 18, Rick, Billy Gerhardt, Gary Drayton, and Jack Begley continue searching the Dunfield spoils for artifacts that Robert Dunfield may have missed when he excavated the Money Pit with a 70-ton crane. Billy soon spots wood, and Gary detects a large spike. Jack uncovers a heavy timber with two iron fasteners embedded in it that the team hopes will help date the wood. As the search continues, Jack finds another timber with a large dowel hole, a construction technique used throughout Europe since the 15th century. Billy and Jack then encounter sod in the spoils pile, suggesting they have reached the original ground surface. Beneath it lies what appears to be deliberately laid split rock. Steve Guptill arrives to take survey readings and tells the group that based on the swamp data, the stone road would terminate exactly where they are digging. Rick, Marty, Dr. Ian Spooner, Craig, and Alex Lagina later visit the stone feature, and Spooner describes the material as rock mixed with organics that has a distinctly unnatural quality. Marty orders a trench through the area. At the research center, Carmen Legge examines the spike Gary recovered the previous week and identifies it not as a chisel but as a cribbing spike from a wharf or shaft, noting the visible grain fibers in the iron place it in the mid 1700s. Carmen says he is very confident the artifact is depositor related.
At the Money Pit, Terry Matheson calls Rick over to examine the core samples from Borehole E-1.5, eleven feet southwest of C1. Terry describes an undermined area of Dunfield backfill before a sample from 89 feet produces chunks of wood and what appears to be a beam. Scott identifies it as pit sawed, a technique dating back as far as two thousand years but not widely used in European cultures until the 15th century.
In the War Room, mechanical engineer Matt Sandt joins by video conference to discuss a possible misinterpretation of Zena Halpern's map. Comparing the French and English versions, Matt points out that the original text reads "the hole under the hatch" rather than simply "the hatch," a distinction the team agrees makes far more sense. When Matt overlays the map on a satellite image of the island, Jack notes the hatch would fall on Lot 4. Craig and Doug Crowell then meet Daniel Boulay and Taylor Pierce of CSR GeoSurveys on Lot 22 to begin scanning. The team uses VLF radio signals capable of detecting tunnels to 180 feet deep and a magnetometer survey for ferrous metals up to thirty feet below ground, covering both Lot 22 and Lot 4. In a follow-up War Room session, Colin Toole and Mitch Grace from CSR present the results, revealing an anomaly near the road on Lot 4 in the area where the team believes the hatch could be located.
