QUOTE(xavi5567 @ Dec 10 2013, 09:23 AM)
erm... it is not jus tar residue la.. is more like bitumen liquid .. it is carcinoginic plus it will leach out as time pass to the soil if not properly handle... creasote for wood treatment is not as mild as u think la... it is kinda poisonous... my advice if u really wan to use recycled timber... try to savage from old wooden house in kampung rather than railway sleeper... yes u can still use it after some sort of treatment (which is to clean off the creasote) but there will still be residue and some people are sensitive to stuff like this it is not ur normal smoked salmon yoh!!!

but if one insist on using railway sleeper.. they should at least understand the risk 1st and use it appropriately:
http://www.wood-protection.org/newpubs/fil...ersion_0107.pdfFrom your pdf link
"Wood treated with creosote prior to 30 June 2003 and placed on the market for second-hand use
(typically old railway sleepers) may be used (by DIY, professional and industrial users) in any
situation apart from those listed below under ‘Restricted uses’ "
The restricted uses being
"1. inside buildings,
2. in toys,
3. in playgrounds,
4. in parks, gardens and outdoor leisure facilities where there is a risk of frequent skin
contact*,
5. in the manufacture of garden furniture such as picnic tables,
6. for the manufacture and use and any re-treatment of:
• containers intended for growing purposes
• packaging that may come into contact with raw materials, intermediate or finished
products destined for human and/or animal consumption,
• other materials which may contaminate the products mentioned above."
So I don't see it as being that dangerous and certainly I still stand by my earlier statement " "creasote is highly poisonous if u come in contact to it." That's not really true! "
In fact there was a 2005 study of 2,179 workers that found there was no adverse health effect to workers that had be applying Creosote in industrial, some of them exposed to it since the 1940s and 1950s. So I would have to say the current warrings and regulations seem to be overkill and panic-merhanting by public policy officals that probably have little or no understanding of the real dangers if any.
"A 2005 mortality study of creosote workers found no evidence supporting an increased risk of cancer death, as a result of exposure to creosote. Based on the findings of the largest mortality study to date of workers employed in creosote wood treating plants, there is no evidence that employment at creosote wood-treating plants or exposure to creosote-based preservatives was associated with any significant mortality increase from either site-specific cancers or non-malignant diseases. The study consisted of 2,179 employees at eleven plants in the United States where wood was treated with creosote preservatives. Some workers began work in the 1940s to 1950s. The observation period of the study covered 1979- 2001. The average length of employment was 12.5 years. One third of the study subjects were employed for over 15 years.[73]"
Yes I do agree people should be aware of the risks and the safe use etc.