MARTINEZ — A leak led to an explosion and massive fire at a refinery with a history of issues Saturday, prompting a shelter-in-place for much of Saturday evening after black smoke spread across ...

Black communities affected by industrial pollution in South Philadelphia are among those watching a Trump administration ...

About 300 workers have returned to Martinez Refining Company after a leak ignited an explosion ... the refinery unintentionally released petroleum coke dust, a byproduct of refining crude oil ...