Niles Ford Officials Say "Large Natural Gas Buildup" After HVAC Work Caused NW Baltimore Explosion By Emily Sullivan • Jan 12, 2021 Sarah Y. Kim/WYPR The Aug. 10 explosion in Northwest Baltimore that killed two people, injured seven and reduced three rowhomes to rubble was due to a “large natural gas buildup” ignited by a stove, city officials said Tuesday morning. Listen Listening... / 1:03