Historically, the hydraulic energy has been the motor source of the main industries that existed in our territory, having preserved some examples of them.
From the Middle Ages, water became the engine of the local industries, being the water mills the most spreaded elements. Soon, waterfalls were also adapted to build other type of early industry like the fulling mills, used for giving major consistency to the fabrics made on craft looms, also, paper mills, sawmills and other industries like chocolate factories built at the beginning of the 20th century.
From all these examples, flour mills are the ones that have survived until these days and actually, there are many of them, -most in deteriorated conditions-, except ing those that have turned into other type of commercial establishments, like the flour mill of Monreal del Campo. Also, a chocolate factory has been preserved in Torre los Negros.
Maybe, the most singular elements of our territory are the wool laundries, which we count with two in the villages of El Poyo del Cid and Calamocha. They were built in the 17th century and their function was to wash the wool coming from the Albarracín Mountain Range, Visiedo and Gallocanta lagoon areas. Once washed, the wool was transported to Zaragoza and France as final destination. The installations, in which they reduced the weight of the wool to commercialized it, used to count on about a hundred workers.
Mining industry is likely to be the most ancient example of industrial exploitation, being Sierra Menera the most significant iron deposit. While the industrial extractive system did not start until the beginning of the 20th century, the continued exploitation began in the Celtiberian Era.
Continuing with the mining industry, it is worth mentioning the exploitation of some small copper seams that allowed the construction of copper hammers, nowadays, preserving part of one of them in the vicinity of the Roman bridge in Calamocha.
Other industries that became significant during the 20th century were the ones related to the construction, building two textile mills in Calamocha and Navarrete del Río, that were the generational replacement of others much older and with a more local production. This is similar to the case of the limekilns, with many of them spreaded around the area.
Mining gypsum was also important, standing out a set of kilns located in the town of Navarrete del Río, making its distribution easier as the railway line was close to them.
But it would surely be the food industry the one that more examples has left in Comarca del Jiloca. The generalization of the electric energy implied the release of the industries located close to the river courses. Flour industries were built in the villages of Bañón, Bello, Monreal del Campo, Barrachina and Calamocha. Also, some industries related with the local production of soda were set up, and emerged two big alcohol industries like the one called Pascual Franco in Monreal del Campo, and the one called Alcoholera del Jiloca in San Martín del Río, whose plants have been reused for the actual wine Museum.
Chocolate industries emerged at some towns like in Barrachina, Calamocha, Luco or the one mentioned before in Torre los Negros.
Also, other kind of industries like a glitter factory located in Burbáguena or some bleach factories which have not preserved any of the manufacturing plants.
Over all these examples from our industrial past, still preserve spectacular examples such as the wind mill or the salt mine, both located in Ojos Negros.