Patriot Coal Corp. has appointed Rashda M. Buttar corporate secretary, in addition to her ongoing duties as vice president and associate general counsel.

Walter Energy has appointed Western Coal’s CEO Keith Calder chief executive officer of Walter Energy, effective upon the closing of the acquisition of Western Coal by Walter Energy. Calder succeeds Walter Energy Interim CEO Joe Leonard. Leonard will continue as interim CEO through the closing and will continue to serve as a member of the Walter Energy board of directors. Walter Energy also nominated Calder, David R. Beatty and Graham Mascall to serve on the Walter Energy board.

Cokal Ltd. has appointed Mark Imber environmental and approvals manager; Yoga Suryanegara resource and exploration geologist; and Williem Hartono marketing assistant.

Skelly and Loy has appointed Royce Holland Sturgill Jr. engineering technician and Amanda Slaughter mine permitting specialist in its Wise office.

The Timken Company has promoted Matthew R. Eckels to chief engineer, application engineering, and Steven A. Roman to chief engineer, product engineering.

Staco Energy Products Co. has appointed Michael Lewis central regional manager.

Grote Industries has appointed Robert (Jim) Holmes southeastern OEM regional sales manager.

The International Society of Explosives Engineers 2011 Blaster’s Leadership Award was recently presented to Jay Elkin. The Distinguished Service Award was awarded to Dr. Charles Dowding, associate chair and professor of civil and environmental engineering at Northwestern University.

Mark Sanders has been named vice president of corporate marketing for Joy Global’s business development team.

Automated Positioning Systems has appointed Neal Toso vice president of business development with the company’s APS America LLC division. Tim Jones has been appointed vice president sales and marketing for North America.