Contact information for the block grants programs. Substance Abuse Prevention and Treatment Block Grant (SABG) Contacts The Single State Substance Abuse Agencies Directory (PDF | 240 KB) lists single state authorities (SSAs) who oversee the SABG and funding for substance abuse programs in their state. Community Mental Health Services Block Grant (MHBG) Contacts The State Mental Health Authorities Directory (PDF | 206 KB) lists state mental health authorities (SMHAs) who oversee the MHBG and mental health programs in their state.