shenango coke works

Sarah Kovash / 90.5 WESA

Asthma rates among elementary school students in the Northgate School District have dropped significantly since one of the region’s top polluters ended operations in 2016, according to preliminary data.

Sarah Kovash / WESA

The view has shifted the past few years during Ken Holmes’ daily walks along the Ohio River, and on Tuesday, it changed yet again.

Until 2016, emissions from two smokestacks often billowed above Neville Island near Pittsburgh. When the Shenango Coke Works shut down, its stacks still dominated the landscape. But just before noon on Tuesday, they disappeared forever.

A series of planned dynamite blasts sent the stacks, plus a coal bunker, crumbling to the ground.