By Eric Bowling, Local Journalism Initiative Reporter, NWT News/North Diamond mining has brought 25 years of growth to the Northwest Territories, but a development corporation veteran is warning that more mines need to come online or the benefits will migrate elsewhere. An economic analysis of the impact of diamond mining on Indigenous communities over the past quarter century was commissioned by three Indigenous development corporations (IDCs) — and it’s been significant. “It’s been a very positive impact,” said Tlicho Investment Corporation CEO Paul Gruner, who noted he’s now worked for four IDCs and can say the impact is widespread. Findings from the report show mining activity created 675 jobs across the communities of Yellowknife, Ndilo, Dettah, Behchoko, Whatì, Wekweeti, and Gameti — ranging from jobs directly in the mining sector…