Laboratory of Conservation & Material Sciences - Laboratory at the Groningen Institute of Archaeology in the Netherlands. Conserves, restores, and studies the manufacturing process of archaeological ceramics and metals. Oxford University Research Laboratory for Archaeology - Provides radiocarbon and luminescence dating, archaeometallurgy, palaeodietary and ancient DNA analysis. Staff, methods. Oxford Dendrochronology Laboratory - An independent tree-ring dating laboratory concentrating primarily on the dating and analysis of standing timber structures. Projects, publications, the dated buildings register. Geochron Laboratories / Krueger Enterprises Isotopic Analyses - Providing radiocarbon, potassium-argon, stable isotopes, and other radiometric analyses. Serving researchers in geology, geochronology, archaeology, anthropology, hydrology, and environmental and food adulteration studies. Additional analyses include C-14 by AMS, tritium, Sr, Rb-Sr, Pb, U-Pb, and Sm-Nd. Tree-Ring Services - Independent tree-ring dating laboratory providing analysis of ancient trees, timber-frame buildings to archaeological timbers. Individual reports, current projects and rates detailed. Beta Analytic - Commercial radiocarbon dating laboratory in Miami, Florida, US. Detailed description of methods and services. Rafter Radiocarbon Laboratory - At the Institute of Geological and Nuclear Sciences, New Zealand, provides radiocarbon dating services to international scientific, academic, and art/antiquities clients. Radiocarbon Dating at Queen's University, Belfast - The Radiocarbon Dating Service at the School of Archaeology and Palaeoecology. Sample sizes, staff, cost and time. Geochemical Research Laboratory - Non-destructive trace element analysis and sourcing of artifacts made from obsidian and other volcanic rocks using energy dispersive x-ray fluorescence analysis.