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Property, Plant and Equipment, Net
12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment, Net [Abstract]  
Property, Plant and Equipment, Net
Property, Plant and Equipment, Net

Property, plant and equipment, net includes the following:
 
December 31
 
2015
 
2014
Coal lands and real estate:
 
 
 
NACoal
$
54,928

 
$
54,228

HBB
226

 
226

NACCO and Other
469

 
469

 
55,623

 
54,923

Plant and equipment:
 
 
 
NACoal
126,939

 
146,994

HBB
49,002

 
49,579

KC
26,119

 
26,152

NACCO and Other
4,978

 
4,655

 
207,038

 
227,380

Property, plant and equipment, at cost
262,661

 
282,303

Less allowances for depreciation, depletion and amortization
130,122

 
122,659

 
$
132,539

 
$
159,644


Total depreciation, depletion and amortization expense on property, plant and equipment was $19.7 million, $24.8 million and $20.9 million during 2015, 2014, and 2013, respectively.

Proven and probable coal reserves, excluding the Unconsolidated Mines, approximated 1.0 billion tons (unaudited) at December 31, 2015 and 1.0 billion tons (unaudited) at December 31, 2014. These tons are reported on an "as received by the customer basis" and are the equivalent of “demonstrated reserves” under the coal resource classification system of the U.S. Geological Survey. Generally, these reserves would be commercially mineable at year-end prices and cost levels, using current technology and mining practices.