Giant steel columns are being drilled 16 metres into the earth at royal oak in west london , preparing the way for twin 6.2 metre wide tunnels to be carved underground .
The first relief well , being drilled into the bottom of the macondo well to allow it to be plugged with cement , is only about two weeks away from its target .
These cooling sticks are 7.6-meter-long steel tubes drilled into the soil ; they contain ammonia , which draws latent heat out of the soil as it evaporates .
这些冷却棒是7.6米长的钢管,被钻入土壤;其中含有氨水,其挥发时可以吸收土壤的潜伏热。
The vida bacteria , brought to the surface in cores drilled 27 metres down , belong to previously unknown species .