A Zimbabwean rights group on Tuesday accused Chinese-run mining companies of "rampant abuse" after two workers were shot and wounded, allegedly by their Chinese boss, after they complained about outstanding wages.
He allegedly tried to sack some of the most vocal workers, leading to an argument during which Zhang allegedly shot one of them in both thighs.
A second worker had a bullet graze through his chin, said police.
On Tuesday the Zimbabwe Environmental Lawyers Association (ZELA) slammed the ethics of Chinese employers in the country.
"The problem of ill-treatment of workers is systematic and widespread and what that (shooting) incident did was to expose the rampant abuse of workers," Shamiso Mutisi, deputy director at ZELA, told AFP.