**Francisco García-Ahumada \* and Cristina Gonzalez-Gaya \***

Department of Construction and Manufacturing Engineering, ETSII-Universidad Nacional de Educación a Distancia (UNED), C/Juan del Rosal 12, 28040 Madrid, Spain

**\*** Correspondence: fgarcia1895@alumno.uned.es (F.G.-A.); cggaya@ind.uned.es (C.G.-G.); Tel.: +34-629-67-27-37 (C.G.-G.)

Received: 1 October 2019; Accepted: 26 November 2019; Published: 7 December 2019

**Abstract:** A new means of minting currency was first used at the Hall Mint in Tyrol in 1567. This new minting process employed a roller instead of a hammer and used hydropower to fuel the laminating and coining mills, as well as ancillary equipment, such as the forge or the lathe. In 1577, Philip II of Spain expressed his interest in the new technology and, after a successful technology transfer negotiation with the County of Tyrol, Juan de Herrera was commissioned to design a factory to accommodate this new minting process. The resulting design seamlessly integrated this new technology. The architectural layout of the factory was derived from the integration of different trades related to the manufacturing workflow, and their effective distribution within a more effective workplace allowed for better use of the hydraulic resources available, and, thus, improvements in the productivity and reliability of the manufacturing process, as well as in the quality of the finished product. Juan de Herrera's design led to the creation of a ground-breaking manufacturing process, unparalleled in the mint industry in Europe at the time. Segovia Royal Mint Factory (SRMF), as one of the first examples of mass production in the proto-industrial stage, represents a historic landmark in its own right. The objective of this article is to analyse the design of the SRMF to highlight its main innovations. For this purpose, the abundant literature on this project will be reviewed.

**Keywords:** mint industry; construction; transfer technology; align process; architectural layout
