1 It prevents access (8)
5 Done to butter on toast (6)
9 Heater (8)
10 Entices (6)
12 Precursor (9)
13 A Rocky Mountain state (5)
14 Fellow (4)
16 Gaping (7)
19 A belt worn over the shoulder (7)
21 Containers for bricks (4)
24 Father of Methuselah (5)
25 Come into being (9)
27 Stationary part of a motor (6)
28 Trachea (8)
29 Fantasies (6)
30 Agricultural (8)
Down
1 Baby deliveries (6)
2 Commands (6)
3 Cloth used in military uniforms (5)
4 Absence of rainfall (7)
6 Watched a movie before its release (9)
7 Intensity (8)
8 Eject (8)
11 Helen's city (4)
15 Nightcrawler (9)
17 Preoccupied (8)
18 Apportion (8)
20 Harvest (4)
21 Summoning (7)
22 Large North American deer (6)
23 Put down (6)
26 2nd most populous country (5)