Cryptic crossword No 3,197

Across

1. Potential explosion contained in major gas main (6)
2. Heartless pig ate endless rice, and family might burst because of this? (8)
3. Nobody found in one month (4)
4. Develop and mature ahead of schedule (6)
5. Voluptuous sitter and I playing around following brief visit (11)
6. Class starts without half of us - not right? (6)
7. He said he'll be back to treat minor wound (10)
8. Going on record about pain following wrist injury (10)
9. Roughly one gross is adequate (6)
10. Go for extra velvet cakes (6)
11. Made cover without cellophane wrap (6)
12. Good doctor about to ingest initially untested medicine (4)
13. During breach, quote circulated about maintaining privacy (8)

Down

1. Psycho finally manipulating lady endlessly in testing chambers at last (6)
2. Crowd chasing gold almost died for nothing in times past (8)
3. Bend the knee and propose (6)
4. I'll get dizzy turning around without slowing down (8)
5. In ancient Rome, where kings suppress a gentle soul from a faraway land? (6)
6. Heads of State Police irrefutably needing awful lot of backbone (6)
7. Air filter (6)
8. Don't go contracting Elizabethan gonorrhea (4,2)
9. Windows could be, ultimately should be cleaned as directed (6)
10. Homicide testimony is filled with hate (6)
11. Standard to throw up during AA turn? (8)
12. First of pilotless planes periodically departing airport - strangely secure (11)
13. Endless madness surrounding Epstein's beginning to be diminished (8)