Detecting and Mapping Slag Heaps at Ancient Copper Production Sites in Oman. - Alexander J. Sivitskis; Joseph W. Lehner; Michael J. Harrower; Ioana A. Dumitru; Paige E. Paulsen; Smiti Nathan; Daniel R. Viete; Suleiman Al-Jabri; Barbara Helwing; Frances Wiig; Daniel Moraetis; Bernhard Pracejus (Remote. Sens., 2019)