"I want to share our experience and satisfaction with kellerconsulting™ for over 15 years. Throughout these years, kellerconsulting™ and its founder Graden Keller, have been our trusted thought partner and external sounding board for many projects and organizational changes. Graden is valued as a true friend, not only to the staff, but also to the company. Graden has a special way of opening up the hearts and minds of those who are willing to learn. Those who will listen and see are greatly rewarded."

Charles Neely Harper, Air Liquide ∣ Global Director, Smart Manufacturing & Infrastructure ∣ Chief Technologist, Smart Innovation Operations ∣ International Group Fellow ∣ Large Industries World Business Line - Worldwide Industrial Management