References

1. API Standard 936, 2014. Refractory Installation Quality Control—Inspection and Testing Monolithic Refractory Linings and Materials. The American Petroleum Institute, Washington D.C.
2. “What Is Refractory?,” written by Jackson Espinosa, Sentinel Integrity Solutions. Published in the July/August 2016 issue of Inspectioneering Journal. 
3. “Testing and Inspection Methods to Improve the Life Cycle of Refractory,” written by Jeremy Wimberly, Sentinel Integrity Solutions. Published in the March/April 2015 issue of Inspectioneering Journal.

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