To: Don Lloyd who wrote (67337 ) 4/8/2001 6:09:13 AM From: goldsheet Respond to of 116791 > Is it possible that some of the current weakness in gold may be the result of more modest advances in the economics of recovery methods? Highly probable (IMHO) I'm one of those who thinks a very large portion of gold price is determined by basic supply/demand. Heap leaching technology was more than a modest advance, helping to take gold production from 1200mt in the mid-to-late 1970s, to over 2500mt today, more than double. > Alternately, was there a large increase in gold mining investments around the time that gold peaked? Sure, but by the time the projects were in production prices has already dropped. The investments made at the 79-80 peak did not show up in increased production until about 83/84. Likewise when gold ran up in 92/93 projects became viable, but did not show up in production until 96/97 (after the peak) Once you have sunk the capital, one does not walk away easily, which is why gold production has not declined much despite lower prices. > Does a reasonable percentage of current mining output come from mines that have significant historical amounts of past lost sunk costs as previous owners have gone into bankruptcy or liquidated their investments at fire sale levels? Most big mining projects have one owner for the life of the mine, although they may take huge write-offs along the way. Projects get restructured, re-engineering, sometimes sold or closed, but bankruptcy and liquidations are infrequent. I think some of the old projects have very different cost structures than current projects. 20 years ago it may have cost you $50/ounce in capital and $150 in cash costs to mine gold. Projects are bigger and more capital intensive, but cash costs are less, so you might have a mine with $150/ounce in capital and $50 cash. Once you have built the $1 billion mine, you will keep mining all the way down to $50 gold !! Cash flow is positive, and you owe the bank a lot of money and interest, unless you used a gold loan to finance the mine <g>