Burt Hill, the Butler-based architectural and engineering firm, was named to the "Giants 300" list by Building Design & Construction Magazine.

The annual list consists of U.S. firms that design or construct the most commercial, institutional, industrial and multifamily residential structures in 2007.

Burt Hill made the list in numerous categories including:

• University design firm, ranked sixth in the nation;

• Architectural and engineering firm, ranked 12th with total billings averaging more than $114 million in 2007;

• Office design firm, ranked 17th;

• Mixed-use design firm, ranked 20th;

• Building team LEED APs, ranked 36th for green design.

HERMITAGE, Mercer County — Sabrina Renfrew was hired as senior vice president of treasury management sales officer for First National Bank.She had been vice president for treasury sales for Huntington Bank in Cranberry Township. She also worked for National Bank in Butler.Renfrew is a graduate of Grove City College, where she earned a bachelor's degree in business and economics. She also earned a diploma from the Bucknell University School of Banking.She lives in Saxonburg with her husband, David, and their two daughters.

SAXONBURG — II-VI announced it increased its investments in Guangdong Fuxin Electronic Technology in Guangdong Province, China.Fuxin makes thermoelectric-based consumer appliances, such as refrigerators, wine coolers and water coolers, and is working with II-VI subsidiary, Marlow Industries, of Dallas, Texas, to expand its product line. Marlow also has a plant in Ho Chi Minh City, Vietnam.

Leadership Butler County's Class of 2008 raised more than $6,000 through its class project and recently awarded the money to six nonprofit organizations.Recipients of the money are: Butler County Children's Center, Kids County, CANDLE, Reality Tours, Dunbar Center, United Way of Butler County and VoICE.

The Tri-County Workforce Investment Board was recognized by the Pennsylvania Workforce Investment Board as "a high performing" workforce investment board.In recognition of its work, the Tri-County board received $100,000 to invest in work force development activities.

• Stephen Kowalczyk of Monroeville was presented a Diamond Club Award from Darden Restaurants for his work as manager of the Red Lobster Restaurant at Moraine Pointe Plaza in Butler Township.• Harry Makinak, corporate purchasing manager for Marmon/Keystone, is retiring after 43 years with the company. Makinak, who lives in Springdale, is being replaced by James McElhaney of Butler. McElhaney was promoted to the position of corporate purchasing manager from corporate buyer. He has been with Marmon/Keystone since 1987. He lives with his wife, Jacki. The couple has two daughters.

• The Butler County Chamber of Commerce is hosting the Celebrate Business Dinner at 5:30 p.m. Sept. 11 the Butler Country Club in Penn Township, with keynote speaker Justice Seamus McCaffery of the Pennsylvania Supreme Court. Two annual awards also will be presented, the William A. Morgan Jr. Entrepreneur of the Year Award and the Chamber Champion Award. Cost is $50 per person.• The Zelienople-Harmony Area Chamber of Commerce:• Is looking for people to serve on its board of directors or on the business association's board of directors.• Is looking for businesses to participate in the "We Mean Business in Butler County" Business Showcase 2008 as well as individuals to attend the event sponsored by the Zelie-Harmony, the Cranberry Area and the Butler County chambers of commerce.For information, call the chamber at 724-452-5232• The Northern Allegheny County Chamber of Commerce is hosting these events:• 9 a.m. to 5 p.m. Aug. 16, Community Day Trade Show, Ross Park Mall, and it is looking for businesses to participate.• 11:30 a.m. to 1:20 p.m. Aug. 22, Picnic in the Parking Lot, catered by Atria's new owner, Mike Barbeau, in the chamber's parking lot. Cost $5 for members, $10 for nonmembers.• 7:30 a.m. Sept. 11, Economic Forecast Breakfast at the Treesdale Country Club with guest speaker Lew Villotti, planning and development director for the Southwest Pennsylvania Commission. Cost is $20 per person.For information, call the chamber at 724-934-9710.

• The Center for Women's Entrepreneurship at Chatham University and SCORE Pittsburgh will present a small business basics workshop for women interested in starting their own business or expanding their current business. The session will be from 9 a.m. to 12:30 p.m. Aug. 23 at Chatham. Cost is $25 per person.Go to www.chatham.edu/ccwe/ for more information.