Eboracum workshops growing up outside the fortress to supply the needs of the 5,000 troops garrisoned there. Production included military pottery until the mid-3rd century, military tile kilns have been found in the Aldwark-Peasholme Green area, glassworking at Coppergate, metalworks and leatherworks producing military equipment in Tanner Row. In the Roman period, Eboracum was the major manufacturing centre for Whitby Jet. Known as "gagates" in Latin, it was used from the early 3rd century as material for jewelry and was exported from here throughout Britain and into Europe. Examples found in York take the form of rings, bracelets, necklaces, and pendants
Latin influence in English tribes, who would later give rise to the English language (the Angles, Saxon and Jutes) traded and fought with the Latin speaking Roman Empire. Many words (some originally from Greek) for common objects therefore entered the vocabulary of these Germanic people via Latin even before the tribes reached Britain (what is known as the Continental or Zero Period): "anchor", "butter", "camp", "cheese", "chest", "cook", "copper", "devil", "dish", "fork", "gem", "inch", "kitchen", "mile", "mill", "mint" (coin), "noon", "pillow", "pound" (unit of weight), "punt" (boat), "sack", "street", "wall", "wine". Cognates of virtually all of these English words exist in the other Germanic