Large explosion at Louisville plant heard for miles; at least 11 hospitalized WLKY LouisvilleResidents urged to shelter in place after apparent explosion at Louisville business ABC NewsShelter-in-place ordered after building explosion in Louisville, Kentucky, neighborhood CNNLouisville Fire crews responding to workplace explosion in Clifton neighborhood WAVE 3Louisville police setting up 'triage area' after Clifton residents report 'explosion' WDRB