Contribuição para o resgate da memória da exploração de carvão natural no concelho de Porto de Mós: Mina do sítio das Hortas

The first coal mining works in the county of Porto de Mós date from the last quarter of the 19th century. The Sítio das Hortas mine, located in this county for which it was possible to foresee a large production, made part of these works but ran into constraints arising from the questionable lack of communication routes and the allegedly thin thickness of its brown coal. However, some tons of coal still came out of this mine. By the end of the century, the mine had already been abandoned. Despite having been granted a new concession, there is no record of new activity since then. The mine was declared definitively abandoned in 1987. Thus, the reports by of engineers who visited the mine in that period are essential documents to recover the county's industrial memory