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From the several conditioning factors affecting this industry, the geological constrains at quarry scale stands out as one of most important. Globalization and increasing competition\u00a0in the building stone market\u00a0require large raw material blocks to keep\u00a0further processing as cost-effective as possible. Therefore, the potential extraction volume of in-situ stone blocks plays an important role in the yield of a dimensional stone quarry. The full characterization of the fracturing in the quarries comes up as fundamental in the assessment of the in-situ blocks volume\/shape and potential extracted raw blocks. Identify the joint sets present, their spacing and the differences across the quarry demands a continuous assess during the quarry live span. Information from unmanned aerial vehicles helps in the field survey, namely trough digital surface models, orthophotos, and three-dimensional models. Also, the fracturing modelling by specific software programs is crucial to improve the block size assessment and the increase the quarry yield. In this research fracturing of twenty-one quarries of granite, limestone, marble, and slate from Portugal were assessed by combining field surveys with new techniques. From the studied quarries several cases were selected and presented to highlight the importance of this combined methodology in the fracturing assessment and how they can be helpful in the maximization of the resources and quarry management.<\/jats:p>","DOI":"10.1007\/s12665-021-10031-y","type":"journal-article","created":{"date-parts":[[2021,12,18]],"date-time":"2021-12-18T07:02:37Z","timestamp":1639810957000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Building stone quarries: resource evaluation by block modelling and unmanned aerial photogrammetric\u00a0surveys"],"prefix":"10.1007","volume":"81","author":[{"given":"Maxim","family":"Bogdanowitsch","sequence":"first","affiliation":[]},{"given":"Lu\u00eds","family":"Sousa","sequence":"additional","affiliation":[]},{"given":"Siegfried","family":"Siegesmund","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2021,12,18]]},"reference":[{"key":"10031_CR1","doi-asserted-by":"publisher","DOI":"10.1007\/s10040-020-02178-y","author":"MEM Akara","year":"2020","unstructured":"Akara MEM, Reeves DM, Parashar R (2020) Enhancing fracture-network characterization and discrete-fracture-network simulation with high-resolution surveys using unmanned aerial vehicles. 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