Assertion: heap leaching | /r/HasProperty | become popular
Facets:
value: increasingly
type: DEGREE
Source sentences:
text: In a paper presented in 2002, Alan Taylor, principal of Australia-based Alta Metallurgical Services, noted that while heap leaching has become increasingly popular for the recovery of copper from oxide or secondary sulphide ores, “it is not without its pitfalls, and a number of projects have suffered from slow ramp-up times and [have] not lived up to expectations.