Across:
1. Backing lithium and copper bond with tip of metal brand as "regulation" additive (9)
6. For each one winning silver, Mossad killed several with this device (5)
:9,11. Die cast: this means the end? Oddly, with challenge, could be vacated (5 8)
10. Insensitive, bizarre "fun" having one fish bite head off another (9)
11. see 9
12. Not hard to lose head and endlessly lump together refugees pursuing this (6)
14. International pact essentially reversed, and board was less flexible because of this (4)
16. Arguing over Nessie's accommodation of household employee (9)
18. Dummy who turns up around military base (9)
19. Write in stone "despicable at heart" (4)
22. Another ungulate emerging from caribou rebirth (6)
23. Cultural headwear beginning to be removed after bus turned away from city centre (8)
26. A 2 down musician and Yellow Brick Road musician carrying fish (9)
27. Report of explosion around second of 2s, which could clear things up (5)
28. Long rejected fashions which are eyesores (5)
29. Ben D. R. died, tragically immobilised (9)
Down:
1. Famous royal thus framed by fellow in famous city square (7)
2. see 21
3. Gustav's harem upset about line (6)
4. Checks around old city, e.g. at troubled end of the line, for 21 23 2s (10)
5. Metals appearing symbolically in 11 for some re 21 2 17 (others got 9) (4)
6,18dn. Violent terrors seek coups; taking time out they carried explosives in the 21 2 17 (8 7)
7. Ties girls up, which is most awful (9)
8. Schemes see grim destruction (7)
13. Uncovered vase with ends oddly flipped (10)
15. One leads thousands by speech in defiance of ethical norms (9)
17. see 21
18. see 6 down
20. Deadly game with mystery spell? (7)
21,2,17. Quiet temptation which comes from above, quagmires that trap doctor in grim destructive schemes (6 5 8)
24. Vital liquid 17 'let' out of dreadful openings? (5)
25. Pointed attack upsets clubs (4)
Solution:
METAMUCIL=PAGER|
A=R=A=H=I=R=R=E|
DEATH=UNFEELING|
I=I=L=R=E=S=S=I|
SENTENCE=ASYLUM|
O===R=H=O=U=I=E|
NAIL==GOVERNESS|
==M=B=A=E=E=S==|
COMFORTER==ETCH|
O=O=M=E=T=M===A|
OUREBI=SUBURBAN|
K=A=I=S=R=M=L=G|
ELLINGTON=BROOM|
R=L=G=A=E=A=O=A|
STYES=BEDRIDDEN|
Name: 910 - Grim Destruction
Author: by BenDR

Annos-Across:
1. rev( LI + CU + MATE + M(etal) )
6. AG in PER
:9,11. odd letters "DiE cAsT tHiS mEaNs ThE eNd" + C(halleng)E, &lit
10. *FUN + EEL + (l)ING
12. (e)ASY + LUM(p)
14. rev (al)LIAN(ce)
16. tel (arguin)G OVER NESS(ie)
18. FORT in COMER
19. (wr)ETCH(ed)
22. tel (carib)OU REBI(rth)
23. rev( BUS ) + (t)URBAN
26. EL(LING)TON
27. (t)R(ain) in BOOM
28. STY(l)ES
29. *( BEN D R DIED )
Annos-Down:
1. DI SO in MAN
3. L in *HAREM
4. CH UR CH + *( E.G. AT )
5. LI + FE
6,18dn. *( (t)ERRORS SEEK COUPS )
7. *( TIES GRILS )
8. *( SEE GRIM )
13. OVERT + URN + E(n)D(s)
15. I MM + ORALLY
20. CD
21,2,17. MUM + BAIT + RAIN + BO(MB IN)GS
24. acr( B... Let Out Of Dreadful )
25. rev( BATS )
Defs-Across:
1. brand as "regulation" additive
6. Mossad killed several with this device
:9,11. Die cast: this means the end? Oddly, with challenge, could be vacated (5 8)
10. Insensitive
12. together refugees pursuing this
14. board was less flexible because of this
16. household employee
18. Dummy
19. Write in stone
22. Another ungulate
23. away from city centre
26. A 2 down musician
27. which could clear things up
28. eyesores
29. immobilised
Defs-Down:
1. famous city square
3. Gustav
4. end of the line, for 21 23 2s
5. 11 for some re 21 2 17 (others got 9)
6,18dn. they carried explosives in the 21 2 17
7. most awful
8. Schemes
13. flipped
15. in defiance of ethical norms
20. Deadly game with mystery spell? (7)
21,2,17. grim destructive schemes
24. Vital liquid
25. Pointed attack