Theinvestment management firm Van Eck, for example, offers theMarket Vectors Gold Miners ETF ( GDX ) and the Market Vectors Junior Gold Miners ETF ( GDXJ ) . We spelled out those concerns in this article, and thoughthe Fed 's bold $1 trillion move hasn't led to ruinousinflation just yet, many inflation hawks have been loading up on gold and silver -- just in case. These companies typically have little or no sales yet, so investors are left to assess thereal estate value of those mines and try to anticipate what future cash flows might look like.