1 km in 42.6 seconds. Good start, but I faded badly at around 750m. Still, a good way to get the blood pumping at lunchtime, enough to get me on the leader board for a bit and plenty good enough for some team schwag- a pair of shorts and a shirt.
Friday, June 08, 2007
Wednesday, June 06, 2007
The compost heap is cooking away nicely- in fact it's steaming.
A quick probe registered temperatures around 62C in the centre of the pile- that's 143F, which is plenty hot enough to kill weed seeds and other nasties, and indicates that the carbon:nitrogen balance is about right.
Cornell university has a page on composting physics which describes the temperature characteristics of decomposition.
Material choice is key- the last load (which was around a 30cm layer over 1sq m so about 0.33 cubic metres) consisted of:
- 2 grass boxes grass clippings (form a recently-fed lawn so probably high in N)
1 shredder box (40cm*15cm=0.045 cubic metres) of shredded paper (bills, very satisfying)
- approx 4 kg spent coffee grounds
- approx 3kg kitchen waste (veg peelings, coffee grounds, teabags and paper kitchen towels)
- 1 large cup Garotta compost accelerator.
No leaves this time, unlike previous loads.
This was mixed together, on top of (but not mixed with) an already-composing layer of much the same material. No added water this time since the grass clippings were fairly moist.