By Reuters Staff (Updates prices) LONDON, May 17 (Reuters) - Copper rose back towards last week’s record high on Monday as the threat of strikes at mines in Chile and a belief among investors that prices will rally further offset weak factory data from top metals consumer China. Benchmark copper on the London Metal Exchange (LME) was up 1.2% at $10,359 a tonne at 1615 GMT, close to last Monday’s all-time peak of $10,747.50. Copper, used in power and construction, is up more than 30% this year and many analysts expect more gains as the world shifts from fossil fuels to copper-intensive electrification, and demand outpaces supply.