@misc{di2019resource,
  title = {Resource fields for stone aggregate – granite, stone aggregate – Malmesbury slate, stone aggregate – Table Mountain sandstone, brick clay, plastic clay, silica sand, gravel (ferricrete) and kaolin in the Greater Cape Town area.}
  author = {D.I. Cole},
  url = {https://resource.capetown.gov.za/documentcentre/Documents/City%20research%20reports%20and%20review/Remaining-Extent-of-Mineral-Resources-in-CCT-REPORT-2011-06.pdf},
  year = {2019}
}