Blackstone Consulting, Inc. | 28,936 followers on LinkedIn. Food, Janitorial/EVS, Staffing, and Security Services | Founded in 1991 by company President Joe Blackstone, Blackstone Consulting, Inc. (BCI) is a national and international service provider performing services in Environmental, Security, Facilities Maintenance, Staffing and Food Service Management. BCI is a minority-owned company with credentials in a number of national, regional and local programs, including the NMSDC Corporate Plus Program, which attest to our commitment to excellence.