BRIEF-Syncrude sending "several hundred" more workers to oil sands facilities
May 25 (Reuters) - Suncor Energy Inc
* Syncrude says no timeline yet for production restart, will release details on timing at a later date
* Syncrude, majority-owned by Suncor Energy Inc, says making "significant progress" on plan to safely restart operations
* Says sending "several hundred more employees over the coming days" to sites north of fire-stricken Fort McMurray Further company coverage: (Reporting By Eric M. Johnson in Calgary)
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