Nigeria resumes mining in Zamfara state on improved security
Nigeria has lifted a ban on mining exploration in the northwestern state after a five-year suspension.
* China copper imports may slow in March – Macquarie * China March HSBC flash PMI 48.1 vs 49.6 Feb final reading (Recasts, adds analyst quote, detail, updates prices) By Melanie Burton SINGAPORE, March 22 (Reuters) – London copper futures turned negative…