This dissertation discusses about the tin mining in Bangka community in Penagan village, Province of Bangka-Belitung Islands, particularly on relations of strength in the activity structure of tin mining performed by the miners (individuals or groups) in organizing the control, exploitation, management and distribution of the resources in the area. Tin mining activities performed by Bangka people in Penagan is called TI forming inseparable part of Bangka people life. In these activities, the miners are connected in the context of relation of power based on the strength of each miner. The relation of strength and powers is not only demonstrated by the statue and role between Boss and subordinates in TI activities but also among TI with other miners interested in tin resources.In this dissertation, i will show the relation of power in the social structure being the function of mutual relations of strength among the miners based on the capabilities and capacity of each miner in such structure. The powers of each miner includes capital and symbols of relaionship regularly reproduced to strengthen the existing relation. Mutual relation is functionally empowered by the miners to maximize the economic benefit from available resources in the walks of life of the ccommunity. Tin mining structure is a siymbiotic and mutual cooperation network (mutual and profit exchange) primarily among the miners based on economic benefit of tin resource, where the fund will then become collective standard of the miners and business groups. The strength held by each miner in the context of tin resources control and tin mining activities indicate no dualism of the strength of the miner binding of free. In term of mining context, the existing strength is independent or binding. There is no miner who can directly control by the power it owns in tin mining activities. This is attributable to the fact that tin, as a resource in social system of tin mining is considered as collective resources.Research methodology used in this dissertation is qualitative research method with observation technique and in-depth interview. Specifically, it uses ethnography method resulth in deep and holistic examination on tin mining performed by Bangka community in Penagan. The period of data collection began from the early 2005 until August 2006. I use the approach referring to the relations of power and strength among the miners in the tin mining structure which includes control, management and organizing of tin resources. The relation of powers among the miners is based upon the strength of the miners to influence and or to control other miners.