I have thought Bernie’s political
programs are unalloyed fantasy. Two recent ideas put his plans to shame on the
fantasy front. In one sense, they might now serve as useful antidotes for those
of us who are way too immersed in mere temporal topics like, Will Bernie beat
everyone on Super Tuesday?
These two notions describe a
future that, in their believers’ eyes, is not only probable but eminently
worthy, even necessary. And, like Bernie’s magical myth-making proposals, they
aren’t blemished by their financial requirements for success nor worry about
their potential adverse consequences.
Interestingly, they both share a
focus on a modern-day solution to the age-old problem of how to satisfy
humanity’s increasing needs for resources, despite these resources’ scarcity. They
both require technology that doesn’t yet exist.
So let’s first escape to the
fantasy high of moon mining. Yup, commercially extracting ore from our next-door
astronomical object a mere 238,900 miles away from home. Homer Hickam’s tale,
“Let the Moon Rush Begin,“ summarizes his high-flying, fervent belief in
needful digging on the moon.
Homer believes the US should now
start considering the moon as our “eighth continent and potentially a new
source of wealth for the people of Earth. Our previous human and robotic
missions discovered that the moon has abundant water and oxygen, as well as
helium, platinum, thorium, rare earth metals and other minerals that may well
be worth digging up and transporting back for use in thousands of earthly
products.” He goes on to say, once electricians, plumbers, miners and
construction workers start going to the moon, and the middle class starts using
products made with lunar minerals, the US will become a true spacefaring
nation.
Homer seems unable to turn off his
brain’s mental screen that’s continuously projecting either old Star Trek
movies or The Expanse. A spacefaring nation with far-away lunar plumbers? How
about just getting one to come within three days to fix your leaking disposal.
Homer’s opinion that there’s
“abundant water” on the moon requires a huge definitional stretch of the term
abundant. No one now knows how much water, if any, exists on the Moon. According
to NASA, the moon remains drier than any desert on Earth, but water might exist
in very small quantities. One ton of the top layer of the lunar surface may hold
about 32 ounces of water, the size of a Big Gulp soda. The rocks that Apollo
astronauts gathered on the Moon’s surface came up “dry.” The supposed Moon
water is more likely to be in its south pole craters, the globe’s very chilliest
spots (-387°F). Several post-Apollo moon probes have detected
wavelengths of light reflected off the craters’ surface indicating the chemical
bond between hydrogen and oxygen — a signature, but indirect, indicator of
either water or hydroxyl. Nevertheless, these analyses provided no estimates
for how abundant the water/hydroxyl might be.
Let’s examine thorium and platinum
from his mentioned lunar-sourced ores that the spacefaring US would ship back
to Earth. Does his fantasy make any sense, and cents? Thorium is a weakly
radioactive metallic element widely available in the Earth’s crust. There are
between 2.6 to 2.8 million tons of thorium here on mother earth. It’s about as ordinary
as lead, which is to say commonplace. The US enjoys having about 15% of the
world’s thorium resources.
A small group of fervent scientists
believe thorium could be the “fuel of the future” when it’s used in liquid
fluoride thorium reactors to generate electricity. Such reactors don’t now
exist and would require substantial government R&D funding to become
commercially-available. That’s very unlikely, mostly due to the public’s
continuing revulsion of all things having to do with nuclear electric power.
So Homer’s idea of somehow competitively
transporting thorium from the moon to earth fails for two reasons: it’s abundant
on Earth; and no one is interested in its principal use.
What about lunar platinum? Unlike
thorium, platinum is a very rare metal. Only a few hundred tons are produced
annually. Its scarcity is reflected in its price, that has increased from $448
ten years ago to $2,225 per troy oz. currently. It has a number of crucial uses;
including in computer drives, anti-cancer drugs, catalytic converters and
gasoline. Columbia remains a source of platinum, as well as the Ural Mountains
in Russia. Could the colossal costs of developing lunar mining and transport
technologies of the now-unknown deposits of lunar platinum allow it to compete
with “local” platinum? No one knows, but at best it would likely be a loooong
time before these lunar technologies, as well as the need for lunar plumbers,
would be something other science fiction.
Based on the above information, I’d
say for the foreseeable future moon mining remains illusory. Sorry Homer, we
can continue to gaze at the man in the moon without concerns that his “skin”
will be ravaged by your hoped-for excavations.
Next, instead of looking upward into
the heavens for inorganic salvation, let’s head way downward to exhume the ocean
sea floor. And not just any sea floor, but the deep depths of the “hadal zone,”
a reference to Hades, the Greek god of the underworld. This region is the
absolute lowest of the Earth’s oceans which comprise 71% of its surface and 99%
of our planet’s living space.
The hadal zone begins in water
that is at least 20,000 feet (more than three nautical miles) beneath the
sea’s waves and can extend to 36,000 feet. At these depths water pressure is
unimaginably high, between 1.45 and 1.92 million pounds of pressure per square
foot, that’s almost 700 to over 900 times surface pressure. To say this
little-known environment is hostile is profound understatement.
Astonishingly, there is life that
inhabits the hadal zone, including strange creatures like the snailfish (below), bristle worms, sea cucumber, jelly fish, bivalves, sea anemones and amphipods.
Only three human expeditions have ever reached the seabed of the hadal zone’s
Mariana Trench, the deepest place on Earth. A dozen NASA astronauts have walked
on our orbiting moon, which is more than the number of folks who have dived to
the very bottom of our Earth.
Swire’s snailfish
Wil Hylton’s “20,000 feet under
the Sea” account
describes the challenges as well as possible rewards and consequences of
digging on the ocean’s densely dark depths. The prize for undersea miners is
polymetallic nodules found on deep-water plains. These nodules, first
discovered at the end of the 19th century, are rich in copper, cobalt, nickel
and manganese; minerals crucial for battery-making. They have been found in
practically every ocean. They can be as large as a grapefruit and appear
abundant in the Eastern Central Pacific Ocean, specifically in the Clarion-Clipperton
Zone (CCZ), the main area of worldwide interest for minable polymetallic
nodules. The CCZ runs East-West roughly between Southern Baja Mexico and
Hawaii, covering 1.7 million square miles of ocean.
The International Seabed Authority
(ISA), the UN-based organization that administers the CCZ and other seabeds,
believes there are over 21 billion tons of nodules in the zone. The ISA and its
members have been slowly developing for over a decade its Mining Code, the
rules and regulations for world-wide undersea mining. Because the US has not
yet indorsed the UN’s 1994 Law of the Sea Convention, it is not a member of the
ISA.
The ISA hopes to have its Mining
Code ratified this year, which would legally allow deep-sea mining to commence
in the dozens of CCZ permitted areas and elsewhere. What’s first needed is
development of proven, reliable and environmentally-sustainable technologies
for gathering deep-sea minerals at costs competitive with land-based mines. This
has not stopped organizations from Russia, Korea, China, Japan, France,
Germany, Nauru and Tonga from agreeing to contracts with the ISA to explore
(but not mine) for polymetallic nodules. These organizations are betting the
benefits they’ll receive once the Code is in force – the significant amounts of
metallic treasure – will pay for the hefty expenses they’ve been incurring.
Aside from economics, there are
plenty of concerns about deep-sea mining, principally environmental. Large,
industrial-scale vessels will use robot-guided vacuum hoses to suck up nodules
and sediment from the seafloor. The nodules will be kept in the ship, the rest
will be dumped back into the ocean. The huge plumes of discarded slurry will be
carried by ever-changing ocean currents at different speeds in different
directions. The ISA’s current draft of its Mining Code, which many observers
believe is pro-mining, does not specify the depth of the ships’ discharges, but
is based on the large, untested assumption that it won’t be carried more than
62 miles from the release point.
Sometime in the future when these
organizations begin operating at full capacity, they expect to suck up
thousands of square miles of sea-floor each year. A Swedish study foresees that
each ship will release at least two million cubic feet of discharge per day as
they hoover the abyssal sea-plains.
Is that an outcome worthy of more
electric vehicle batteries? I think not. But because such deep-sea devastation
will be completely unwitnessed and snailfish can’t protest the contamination of
their home territory, the best response won’t be coming from the oceans’ depths.
It’s too bad we can’t vote in favor of the snailfish, who I expect are
predominantly Democrats, and for preserving their neighborhood on Super
Tuesday.