About us

Drilling for Diamonds is a proprietary brand name of the Mills Group. Since 1982, the Mills Group has been producing business development systems, tools, and training that translate into higher profits and productivity.

Who are we?

We specialize in helping our clients achieve profitable growth through breakthrough marketing and sales. Find out more

Leadership

CEO Harry Mills is the author of 26 books on marketing, sales and negotiation and advisor to many of the world's most admired companies. Find out more

Industry expertise

Our clients include country leaders in professional services, telecommunications, auto, banking and finance. Find out more

Clients

Our international client base includes all of the Big 4 accounting giants (PWC, KPMG, Ernst & Young, and Deloitte) plus admired corporates such as GE and Toyota. Find out more