Retired guy- LCM is lost circulation material used when you are drilling and hit a void/fracture to try to plug it. usually bags of wood chips or cotton seed hulls or cedar fiber.
Snow , I had to google it. I remember filling mine with compressed air once and they got tight on my feet.
According to wiki. "Both Mickey Mouse boots and bunny boots have an air valve on each of the boots. These air valves must be opened prior to flying to ensure that the air pressure differential between the walls of the boot and the outside air does not cause the boots to rupture."
Snow , I had to google it. I remember filling mine with compressed air once and they got tight on my feet.
According to wiki. "Both Mickey Mouse boots and bunny boots have an air valve on each of the boots. These air valves must be opened prior to flying to ensure that the air pressure differential between the walls of the boot and the outside air does not cause the boots to rupture."