Ph.D. in Economic Geology from the University Complutense of Madrid (UCM) in 1985. Senior Scientist, Instituto de Geociencias (CSIC-UCM). Head of the research group “Applied Petrology for Heritage Conservation Research” www.conservacionpatrimonio.es. Research interests: Buildings materials characterization (stone, bricks, mortars, etc); Geologic materials decay: agents, causes, and processes; Quality and durability of stony materials; Conservation treatments (cleaning, consolidation, heritage materials preservation); Materials provenance: historic quarries; Non-destructive techniques. Environmental monitoring. He is the author of nearly 250 published works in book chapters and scientific journals, and he has also contributed nearly 200 conference communications. He has participated in 120 research contracts with private companies and public administrations for the conservation of emblematic monuments. He is the coordinator of the TOP Heritage program (www.geomateriales.es). He is an academic member of 78 Postgraduate Courses.