Devastated Canadian oil city begins to rebuild.

FORT MCMURRAY, Alberta, June 1 (Reuters) - Thousands of evacuees who fled a massive wildfire that hit Fort McMurray made an emotional return to their homes on Wednesday, facing a massive cleanup and uncertainty over their safety as the devastated Canadian oil city begins to rebuild.

More than 90,000 fled the remote northern Alberta city as the fire hit a month ago, engulfing some neighborhoods while sparing others. Premier Rachel Notley told reporters about half of the 15,000 expected to return on Wednesday had done so by noon as a two-week staged re-entry begins.

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