MAY 2017 VOL. 122 NO. 4
May 2017 www.coalage.com 1
feature articles
16 Underground Mining Exposition and Conference
Offers Solutions for Operators
Presentations discuss the latest developments
related to longwall mining
26 Uncovering Coal on the Surface
New ideas and equipment may provide a more
effective way of moving overburden
30 Plastic Polymer Ventilation Tubing Beats
Expectations in Full Mine Tests
Previously tested as a hard rock product,
HardLine Performance Ducting boasts that
recent success proves fiberglass is finished
34 High Performance Remote-Controlled
Plow Systems
Longwall systems that employ plows have evolved
and today represent an attractive alternative for
automated mining especially with low seams
coal in the news
4 Zinke Lifts Federal Coal Leasing Moratorium
4 Eagle River Increases Production
5 Armstrong Faces Financial Difficulties
6 More Coal-fired Plants in the Midwest Survive
Uncertainty
8 Hallador Buys Coal From Gold Star
11 Construction to Begin This Summer on Poplar Grove
12 Rhino Plans to Expand Production
14 New GE Innovation Center Will Showcase Latest
Technologies of Coal-fired Steam Power Plants
world news
5 Eskom Policies Cause Shift Among South African
Coal Operators
6 Fact-finding Committee to Probe Coal Mine
Incident in Northern Iran
8 Peabody to Retain Metropolitan Coking Coal
Operation in Australia
11 China to Further Consolidate Coal Operations
departments
2 Editorial
4 News
5 World News
10 Dateline Washington
14 Calendar
40 Operating Ideas
42 Suppliers News
44 Product News
46 Classifieds
48 Legally Speaking
This month, Coal Age focuses on longwall mining in preparation for
the Longwall USA 2017 conference. (Cover photo courtesy of Komatsu
Mining Corp.)
this issue
NEWS/ 4
VENTILATION CONTROL/ 30 PLOW MINING/ 34
MOVING OVERBURDEN/ 26