This issue contains a collection of papers presented at the 70th Conference on Glass Problems at The Ohio State University, Columbus, Ohio. Topics include melting and molding, refractories, and environmental issues and new products.

Charles H. Drummond, III, is a Professor at The Ohio State University's Department of Materials Science and Engineering, Columbus, Ohio. He is a recipient of the Ohio Governor's Award for Emerging Technology; is the Director for the Annual Conference on Glass Problems; and is a recipient of The American Ceramic Society's Cramer Award. His current research is concerned primarily with the structure and properties of amorphous solids or glasses. This includes bulk glasses of scientific and commercial interest and glasses present in crystalline materials. He received his Ph.D. from Harvard University in 1974.

Foreword.
Preface.
Acknowledgments.
GLASS MELTING.
Rapid Refining of Submerged Combustion Melter Product Glass (David Rue, Walter Kunc, John Wagner, Bruno Purnode, and Aaron Huber).
Modeling the Quality of Glass Melting Processes (Adriaan Lankhorst, Andries Habraken, Mathi Rongen, Philip Simons, and Ruud Beerkens).
Process Optimization of the Glass Forming Process by Advanced 3D Forming Models (Erik Muijsenberg).
Operational Experience of an Oxy-Fuel Fired Glass Melter Using an Improved Silica Crown and Wide Flame Burners (Alonso Gonzalez, Wladimir Sarmiento-Darkin, John T. Brown, Len Switzer, Euan Evenson, Sho Kobayashi, and Cuauhtemoc Lagos).
C'mon, Level with Me (Terry Berg).
THE FUTURE OF THE GLASS INDUSTRY AND ENVIRONMENTAL REGULATIONS.
How Big is My Carbon Footprint? (Todd J. Seifried, Christopher J. Hoyle, and Douglas H. Davis).
ICG: A Global Cooperation in the Challenging World of Glass (Fabiano Nicoletti and René Vacher).
Particle Size Measurements in the Flue Gas of Glass Melting Furnaces (Andreas Kasper, Simon Slade, Dilek Bolean, and Guy van Marcke de Lummen).
Ceramic Filter Elements for Emission Control on Glass Furnaces--Efficient Multi-Pollutant Treatment in a Single Step (Gary Elliott and Andrew Startin).
Requirements for Glass Compositions for Solar Applications (A. Ganjoo, L. J. Shelestak, J. W. McCamy, and M. Arbab).
Strategic Materials: Strategic Planning, Geopolitical Forces and Risk Management (Peter Wray).
ENERGY.
Red Lion Bio-Energy--Syngas Production from a Novel Thermal Conversion Process of Coal/Biomass (Douglas Struble).
Macro Energy Balances (John Brown and John Nelson).
Glass Furnace Stack Gas Calculation Issues (C. Philip Ross).
Increase of Glass Production Efficiency and Energy Efficiency with Model-Based Predictive Control (Erik Muijsenberg, Menno Eisenga, and Jörg Buchmayer).
Temperature Distributions in Glass Gobs between Shears and Blank Mold: Calculations and Measurements (Hayo Müller-Simon, Gesine Bergmann, and Kristina Kessler).
REFRACTORIES.
Postmortem of a Conventional Silica Brick from a Soda-Lime Float Glass Furnace Crown (Warren Curtis).
Refractory Ceramic Fibers (Joe Ventura and Daniel M. Wood).
Refractory Solutions for Extra White Glasses (Michèle Blackburn, L. Massard, and M. Gaubil).
Testing and Performance of Fusion-Cast Refractories (Amul Gupta, Kevin Selkregg, and Roland Heidrich).
Mullite Regenerators--An Optimum Solution (Chris Windle and Trevor Wilson).
Author Index.