John P Hamilton, BS

Senior Research Associate

John is a conservator specializing in metals, concretion excavation, and artifact casting.  With over 22 years of experience dealing with the storage, documentation, and conservation of terrestrial and marine archaeological artifacts, he is an invaluable asset when it comes to the successful conservation of any project that comes through the CRL. Additionally, John’s technical training of undergraduate and graduate students is an essential part of the education all student workers receive at the CRL.

John received his Bachelor of Science degree in Wildlife and Fisheries from Texas A&M University in 1998.  Since joining the CRL, he has worked on maritime projects including the La Belle project, the Red River project, Denbigh, CSS Alabama, the Mardi Gras Shipwreck, USS Westfield, and the CSS Georgia.  Terrestrial projects include the San Jacinto Battle Site, artifacts from the Red River War, Palo Alto, the Palo Duro Canyon, and the Fulton Mansion furnace.  John has also worked on several artifacts from forts including the conservation of 8 cannon from The Alamo. He has also worked at Fort El Morro and Fort San Christobal in San Juan, Puerto Rico. He is currently working on 25 cast-iron cannon from Castillo de San Marcos National Monument in St. Augustine, FL. 

John has worked directly on or supported 185 archaeological conservation projects.  He has conserved thousands of metal artifacts including iron, bronze, brass, copper, lead, pewter, and silver, ranging in size from delicate brass pins to 6-ton anchors.  He has completed the conservation 39 cannons to date and is currently in progress on another 29 (68 total).  And on top of all this, he is a swell guy.



Contract Services

The CRL works with a variety of academic institutions, museums, historical societies, government offices, and private individuals. Our goal is to create viable conservation strategies of the highest standard that can be accomplished at minimal cost. For more information, visit our services page.

About Us


Monetary donations and volunteer workers are vital to the ongoing success of the Conservation Research Laboratory. If you would like to volunteer your time and expertise, please contact us here. If you would like to become one of our donors, please click the link below and direct your gift to: Center for Maritime Archaeology and Conservation.

Technical Reports

Report No. 1 Silicone and Polymer Technologies: An Additional Tool in Conservation

Report No. 2 Re-treatment of PEG Treated Waterlogged Wood

Report No. 3 Re-Treatment of a PEG Treated Composite Artifact - A Sabot

Report No. 4 Conservation of Waterlogged Leather Using Polymers

Report No. 5 Silicone Oil: A New Technique for Preserving Waterlogged Rope

Report No. 6 Conservation of 17th Century Canvas Using Silicone Oils

Report No. 7 Silicone Bulking of Waterlogged Cork Using PS340, PS341 and PS343 Silicone Oils

Report No. 8 Conservation of Waterlogged Corn Cobs Using Silicone Oils

Report No. 9 Consolidation of Formalin Treated Marine Crustacean Specimens Using Silicone Oils

Report No. 10 Conservation Research Laboratory (CRL) Leather Dressing

Report No. 11 Mass Spectrographic Analysis of Out Gasses Created From The Dehydration of Archaeological Wood Samples

Report No. 12 Preservation of a Dog Heart Using Silicone Oils

Report No. 13 Preservation of a Dog Heart Using Silicone Oils: A Second Approach

Report No. 14 Preservation of Kelp Specimens

Report No. 15 Conservation of Devitrified Glass with Methylhydrocyclosiloxanes and Silicone Oils

Report No. 16 Polymerization of Polyethylene Glycol and Glycerine

Report No. 17 Polymerization Potentials of Polyethylene Glycol Compounds Commonly Used in Archaeological Artifact Conservation

Report No. 18 Polymerization of PR-10, PR-12 and PR-14 Silicone Oils In Animal Hides Using Catalyst Fumes - Keratin and Amino Acid Cross Linking

Report No. 19 Polymerization of Archaeological Waterlogged Wood Treated With Polyethylene Glycol

Report No. 20 Comparison of the Bulking Abilities of Polyethylene Glycol 1450 and PS341 Silicone Monomers--In progress--

Report No. 21 Tanning of Animal Hides Using Silicone Oils--In progress--

Report No. 22 Induced Flash Polymerization Using Low Neutron Flux Radiation-In progress