A significant explosion has led to a massive fire at the Martinez Refining Company in California, resulting in injuries to at least six workers. Following the incident, a shelter-in-place order was issued for nearby areas, including parts of Pacheco and Clyde, although it has since been lifted. Crews are actively battling the intense blaze, which continues to burn following a hydrocarbon leak. Health advisories have been issued for the surrounding communities as public health officials monitor the situation. The fire is currently trending down, but concerns remain for the safety of residents in the vicinity.