That's the question I have, if they a have warrant to enter and search the house would that by default include locked items in the house? Would that included a locked drawer? If so is there a line drawn between a locked drawer and a "safe"? if so where is it? If the warrant doesn't included locked items do they have to get a warrant for each and every one?
Without seeing the actual warrant it's hard to say for certain, but I believe the way it works is that typically a warrant would be for a location and for the items expected to be found at that location. The item specification can be very broad or it can be very specific. For instance, the warrant might cover all computer equipment and storage without detailing every single laptop and USB device that might be found ("The items to be seized include, but are not limited to, all electronic devices capable of storing, processing, or transmitting data, including desktop computers, laptops, tablets, smartphones, external hard drives, USB drives, SD cards, CD-ROMs, DVDs, and any other form of computer storage equipment."), or it might be for a specific model of bulldozer with a particular serial number.
They would be authorized to search locked rooms and containers on the named premises which could contain the items they are looking for. So if they're looking specifically for a 25 ton bulldozer they probably wouldn't be allowed to break into a typical gun safe, but they might be allowed to break into a locked barn. If they're looking for a broader of items which could conceivably be contained in a safe or locked room then they'd be allowed to obtain access to those. If the owner refuses to provide keys and combinations they can break into them.
