IN THE THIRD building collapse this week, two construction workers were injured yesterday morning when a North Philadelphia rowhouse crumbled, temporarily trapping them inside.
The men, ages 41 and 51, were treated at Temple University Hospital for injuries not deemed to be life-threatening, Fire Department spokesman Chief William Dell said, after the 9 a.m. incident on Boston Street near 9th.
Firefighters had to extricate them after the house collapsed.
Maura Kennedy, spokeswoman for the city's Department of Licenses & Inpsections, said inspectors are investigating why the house crumbled, but noted the men were working without a building permit. L&I issued a violation notice and ordered the owner to hire an engineer to evaluate the structure and a licensed contractor to shore it up, Kennedy added.




