Vein Miner Minecraft PE Mod is designed to considerably simplify and speed up the extraction of ore. Now if you find ore and you want to collect it you only need to destroy one block and the remaining blocks of the same type to break down in chain reactions. In the end you will be able to collect all these blocks.
The mod supports both single player and on the server. Mod turn on/off press the M key (configurable in settings). The mod can be fully customized in the config file, and change modes.