This mod adds various new Pressure Plates to Minecraft. Some of the types included are:
Plates that only work when activated by a player
Plates that only work when activated by a monster
Plates that will activate only when a specific entity steps on them
Plates that work on anything BUT a player
Plates that provide light
Plates with various vanilla wood and rock textures like Jungle Wood and Diorite
Plates that do some other surprising things!
The mod also adds a new ore, Alluvium, that can only be found around rivers, lakes and shore areas. Alluvium ore is a silt made of sand, clay and gravel. Mining Alluvium can sometimes yield other things as well, like nuggets of Iron or Gold, shards of Glass, Diamonds and even Emeralds. You can find this ore to collect Alluvium Dust and make it easier to create the specialized pressure plates. And you can make tools, armor and weapons out of Alluvium as well. The mod adds a hammer that lets you break certain items into shards, which you can then use to make more plates.