This crossword No. 11993 clues and answers were published on Wed 15 Oct 2008 and the puzzle can be visited by following The Guardian Quick Crossword No. 11993 link.
All Across Clues and Answers:
1-across – Box holding items of great value : TREASURECHEST
8-across – Road vehicle able to carry many passengers : BUS
9-across – Derived from experience : EMPIRICAL
10-across – Sci-fi concept for matter transmission : TELEPORT
11-across – Crust of congealed blood : SCAB
13-across – Process of melting together : FUSION
14-across – Roof-like awning : CANOPY
16-across – Yemeni port : ADEN
17-across – Drum for reeling in heavy items by rope or chain : WINDLASS
20-across – Type of sausage : CHIPOLATA
21-across – Owed : DUE
22-across – Untidy mess : DOGSBREAKFAST
All Down Clues and Answers:
1-down – Himalayan region controlled by China : TIBET
2-down – Light, popular music : EASYLISTENING
3-down – Canine trained to control flock : SHEEPDOG
4-down – Account – explosive noise : REPORT
5-down – Remedy : CURE
6-down – Comprehensive work of reference arranged alphabetically : ENCYCLOPAEDIA
7-down – High chest of drawers : TALLBOY
12-down – Notable geographical feature : LANDMARK
13-down – Limp : FLACCID
15-down – Enlarge – detail : DILATE
18-down – Perspiration : SWEAT
19-down – Organ in which young develop : WOMB
This crossword has in total 24 where 12 are across and 12 are down.