Five companies have submitted bids to temporarily manage Warm Mineral Springs. North Port officials opened the bids today, but wouldn’t reveal anything more than the names of the companies. The herald-Tribune reports they are –Warm Springs Attractions–New Vision Energy Solutions Consulting Group LLC–Bioluminescence Institute Inc.-Springs Management Services, LLC–National and State Park Concessions Inc. The Springs has been closed since last summer when the last concessionaire’s contract expired.