Open this photo in gallery: OMERS Chief Executive Officer Blake Hutcheson told The Globe that investment returns can still be found when the broader economy is hobbled.Handout The Ontario Municipal Employees Retirement System, which manages a pension investment fund for 1,000 employers, is not fazed by the uncertain economic backdrop and remains optimistic about delivering solid returns, its chief executive officer and chief financial officer said in an interview Wednesday. Buoyed by a 3.1-per-cent net investment return in the first half of the year, the two OMERS leaders said they are not overly concerned about mixed economic signals that include…