TY - CPAPER T1 - Block 4 geotechnics — past, present and future T2 - Caving 2010: Second International Symposium on Block and Sublevel Caving AU - Preece, CA ED - Potvin, Y A2 - Potvin, Y DA - 2010/04/20 PY - 2010 PB - Australian Centre for Geomechanics PP - Perth CY - Perth C1 - Perth SP - 341 EP - 357 UR - https://papers.acg.uwa.edu.au/p/1002_24_Preece/ ER - DO - 10.36487/ACG_rep/1002_24_Preece