Quarry Southern Africa March 2019 | Page 13

GLOBAL NEWS Ffestiniog Slate Festival logo to more than 200 countries. In the 19th century, the quarries of North Wales were major providers of roofing materials and slate products throughout the world. Similarly, the associated technologies of quarrying and transport infrastructure were also exported worldwide. At its peak, the Welsh quarrying industry was extracting about 500 000t/year of slate. Today, production is a tenth of that, as cheap, cement-based products have dominated the construction market. According to Dr Jana Horak, the head of mineralogy and petrology at the National Museum of Wales, slate has been used since the Roman occupation of Britain (circa AD77) and was exported The quarries of north-west Wales have been nominated for Unesco World Heritage Site status. A panel of experts, in the recent UK summer, assessed the slate landscape around the county of Gwynedd, in North Wales, and the nomination will be formally presented to the United Nations Educational, Scientific, and Cultural Organisation’s (Unesco) World Heritage Centre in 2019. A decision on the application will not be delivered before 2021. As part of the campaign to secure World Heritage Site status, school pupils have sent slate from northern Wales quarries to world leaders. Students at the Ysgol y Moelwyn bilingual secondary school in Gwynedd sent a piece of slate branded with the Penryhn Quarry is one of the few active slate quarries in Wales today Penryhn Quarry is one of a series of quarries in north-west Wales that have been nominated for Unesco World Heritage Site status. during the Middle Ages. The industry took off during the height of the Industrial Revolution. The quarrying industry helped foster traditional Welsh culture. As the quarries grew, so did the villages of Deniolen and Clwt y Bont, which were situated up the hill alongside Dinorwig Quarry. At its height, Dinorwig Quarry employed around 3 000 workers. Quarrying communities created their own democratic structures, including workers’ chapels, while also contributing financial support to Bangor University.  Innovative uses are constantly being found for concrete. Two bodies were found in Thailand, stuffed with concrete and wrapped in sacks and fishing nets. ‘Cement shoes’ or ‘Chicago overcoat’ is a largely fictional method of execution and/or body disposal, usually associated with criminals such as the Mafia or gangs. It involves weighting down the victim, who may be dead or alive, with concrete and throwing them into the water in the hope the body will never be found. In the US, the term has become tongue-in-cheek for a threat of death by criminals. Only one real-life case has ever been authenticated. Cement shoes involve first binding, incapacitating, or killing the victim and then placing each foot into a bucket or box, which is then filled with wet concrete. Typically, in movies and novels, the victim is still alive as they watch the www.quarryonline.co.za  Concrete used in ‘mummification’ Gangsters throwing corpses weighed down by ‘cement shoes’ is actually a myth. concrete harden, heightening the torture and drama. After the concrete sets, the living victim/corpse is thrown into a river, lake, or the ocean. Although called ‘cement’, it is technically concrete. The discovery in Thailand is more gruesome, involving not gangland wars but two people identified as anti-government activists. Their hands and feet were bound, their faces were disfigured, and their bodies had been stuffed with concrete.  QUARRY SA | MARCH/APRIL 2019_11