During the long lockdown, I started caring for plants in odd-shaped pots made from pumice volcanic rock from Mount Pinatubo. Formed when lava cools, this light, porous material blanketed much of ...
The water then filters through thousands of feet of porous volcanic rock, re-emerging at the surface with a variety of essential minerals, creating a refreshing, naturally alkaline water with a pH of ...
The water is then filtered through thousands of feet of porous volcanic rock that enriches Waiākea with a variety of trace minerals, making it electrolyte rich and naturally alkaline, before emerging ...
it has been found that dry porous sandstone could imbibe sufficient nitroglycerin-ethylene glycol dinitrate (50–50 NG-EGDN 1) to yield a detonable charge.
Vermiculite, a fine, puffed, gold flecks mica, which helps with drainage. Perlite, a porous white volcanic rock that improves drainage and aeration. Slow-release fertilizer is sometimes added to ...