Metal Door Opens

1   Manufacturing (Printing Press)
2   A Water Pump
3   Lighters & Match
4   Electric Wall Heater (Switch)
5   Water Running
6   Sawing On Wood
7   Freight Elevator
8   Clock Alarm
9   Teletypes
10   Water Cooler
11   Squeaky Door Opens & Closes
12   Water Running 2
13   A Pile Driver
14   Blacksmithing
15   Tire Pump
16   Meta Lathe
17   Old Style Cash Register
18   Old Phone Rings
19   Messy Closet
20   Manufacturing (Bottling Sounds)
21   Raking Leaves
22   Factory Work Whistle
23   Hospital Waiting Room (with Talking)
24   Bells
25   Electric Typewriter
26   Ice Pick
27   Starting a Bath
28   Metal Door Opens
29   Air Conditioner Unit
30   Someone Knocking On Door
31   Ticking Sounds & Alarm
32   Raising Mini Blinds
33   Door Buzzer
34   Hand Drill
35   Wind Chimes