by wis bang
cjvrr wrote:Also note the cement mills used lots of bituminous coal in their facilities. So there were a lot of inbound loads and outbound empties.Keystone Cement uses waste oil and waste solvents as a RECRA disposal facility to power it's kilns. The French owners of Lonestar Cement on Rt 248 coming into Nazareth installed a modern rotary kiln burning gas, I believe, instead of coal.
The remaining cement mills were forced to incorporate stack emissions controls starting in the late 60's/early 70's. Alot of the smaller/marginal mills closed as the material availale in their quarry may not have supported the investment to modernize.
I remember growing up in Easton, pre-malls, when people shopped in the towns. Easton, Allentown, and Bethlehem were each open two nights a week [everything was closed on Sundays] and you could spot the autos from Egypt, Coplay, Bath, or Nazareth by their cement grey tint.
Working summers in Stockertown [1972/1973] on middle shift you could see when leaving work the particulate falling in the light of the street lamps on rainy nights. The mill opened the stack dust collectors up to get max efficiency from the kilns knowing the rain would knock the dust down. Even w/ the new controls the area immediately surrounding the mill had a dusty look...think grey grass.
They had one quarry dump truck running out from the mill across Rt 191 to a dump site dumping the 'fines' from the stack dust collector. That truck ran several trips every day, 'cept the day after it rained. I used to spot the dump pile when driving on Rt 33. Now these fines are used in chemical admixtures used to promote adhesion when pouring new concrete over old so what was once useless waste is now sold and used...
Plants that couldn't support the cost of moderization closed. Air pollution controls cost money. You can drive around the cement mills today and the grey grass is gone!
Grandson of a LV Conductor & I remember the EL running behind the Univ. of Scranton [class of 76]