Comments about technological history, system fractures, and human resilience from James R. Chiles, the author of Inviting Disaster: Lessons from the Edge of Technology (HarperBusiness 2001; paperback 2002) and The God Machine: From Boomerangs to Black Hawks, the Story of the Helicopter (Random House, 2007, paperback 2008)

Wednesday, April 8, 2020

Essayons! The reason for unity during WW2 is no mystery

Writers have been calling for World War II-style unity lately, but seem puzzled: how did Americans achieve the apparent, single-minded unity back then? 

It took more than fear of defeat. Mostly it was fear for the well-being of one's relatives and friends. In that long-ago war, men were drafted for the duration. Against great odds, Congress approved a draft bill well before America’s homeland was threatened; the main reason was attacks on US shipping and the fall of France and Belgium in May 1940. By 1943 the U.S. had exhausted the pool of young unmarried men and was forced to reach for younger and older cohorts. A rule evolved: “Do War Work or Fight.” The US pulled 16 million men and women into the armed services, by draft and enlistment. That was one of every nine adult Americans. 

And the Army didn't stop there. If the war needed experts on something it either reached out and drafted them or forced them in as uniformed civilian members of the “Army Specialist Corps.” Those men were paid slightly more than draftees but were under military discipline. There was no premium-priced-military-contractor system to substitute for draftees and enlistees. 

That was motivating. Everyone was in the service, or working in war plants, or coping under rationing, or had a relative or friend overseas. So a common bond was forged. Consider this poster, pinned up in hundreds of war plants: “The boy in the draft army may be yours and your neighbors! The marching will be very tough if we fall down back home.” Here it is:


That's the kind of spirit that supercharged Louis G. Schwartz, "Louie the Waiter," who worked at the Sixth Ave Deli in New York City. Both his sons-in-law were in the service; one had been captured by the Germans. Louie decided that every war bond sold to citizens would shorten the war, so he took up a personal crusade to sell as many as possible. He could not be persuaded otherwise. Operating out of his apartment and the delicatessen, Louie sold $30,000 worth of war bonds every week. Adjusted to 2020 money, that's equal to $420,000 now. 

That's every week. 

Louie would size up a new customer at the deli and try to sell him a bond that very day, and then get him to buy another bond every payday. On every menu was this slogan: "You'll buy war bonds sooner or later, so get them today from Louie the Waiter." The deli had customers from all walks of life. Several customers bought bonds with a face value of $100,000. 

All told, according to his obituary, Louie the Waiter sold $9 million in war bonds. That went to buy 66 P-47 Thunderbolts, each painted with "Louie the Waiter" on the nose. His customers asked for no receipt: they gave him cash or checks. Louie turned in the money at the bank or to a volunteer group, and the customer got their bonds in the mail from the U.S. Treasury later. Louie spent most of every afternoon on the phone or walking the neighborhood collecting money and visiting bond prospects. Then he worked eight hours at the deli. He paid all expenses himself. 

Here's the point to take from Louie the Waiter: the secret of successful emergency mobilization is to have clear and fair government mandates that mesh with well-publicized voluntary efforts that rise above the requirements. Those two driving forces, one pushing and one pulling, make a very potent combination. 

If citizens can join in efforts like war bonds or victory gardens that are easily visible to anyone at the street level, the movement will spread faster. As sociologists have found, the visible actions of friends and neighbors are the most powerful way to engage an individual. 

What's it mean today? I'd guess that many of the most determined social-distancing, mask-wearing people have friends or relatives on the front lines of the COVID crisis, whether those at risk are medical staff, first responders, or clerks in essential businesses. 

Sunday, April 5, 2020

Donors and Acceptors: Physical distancing lessons from the explosives industry

Since I'm an analogy guy the notion of masks "to protect you from me, and me from you" reminded me of what I learned about an explosives-safety principle called donors and acceptors.

This was during a visit to the DynoNobel dynamite plant near Carthage, MO. It's what chemists call a nitrating plant, meaning that nitrogen compounds are mixed with other ingredients. The result is blended with an absorbent to fill tubes and make sticks of dynamite. 

When I visited in 2000 this was the last dynamite factory still operating in North America. That's because dynamite has mostly been replaced by less sensitive blasting agents relying on ammonium nitrate. 

The blasting agent our crew used on a construction project in Missouri was one of those ammonium-nitrate explosives, called Tovex, a product of DuPont. It came in tubes and we used Primacord and electric caps to set it off. 

The key ingredient at the Carthage plant, ethylene glycol dinitrate, is an updated version of nitroglycerin, made from glycerol and white fuming nitric acid. EGDN flows like a light vegetable oil. 

Nitroglycerin will explode if shocked or overheated, and the Carthage plant was dealing with thousands of pounds in a single batch, so special precautions were in order. Before our tour, Rick Fethers, the DynoNobel safety officer who served as my escort, went over the plant map. The plant was divided into four zones and people working around the plant had to know which zone they occupied at all times. That way, after hearing a specific set of honks from the alert system, they'd know how to run from danger rather than into it. 

I asked why the buildings were so far apart. Rick explained the risk-management principle of  keeping separation between "donor" and "acceptor" buildings. These are minimum distances required in case of explosion, so that one blast doesn't throw explosives or missiles into nearby storage magazines, potentially triggering a plantwide chain reaction. 

Here's a table from the 2017 "Table of Distances" guide from the Institute of Makers of Explosives. 


Reading down the first column to find a quantity between four and five tons of high explosives (that's the "donor"), reading across the row shows the minimum permissible distance to a barricaded "acceptor" magazine full of blasting agent is 47 feet. And that protective barricade has to be at least twenty inches thick. 

And the publication goes on to explain that if the "acceptor" magazine of blasting agent lacks a barricade, the minimum safe distance is six times greater, or about 300 feet. 

Here's a photo from a 2008 Department of Defense test at China Lake using a one-ton TNT donor charge. This was followed by a careful search for all debris, which reached out two-thirds of a mile. 



So there's the analogy from a hundred years of hard experience with explosives: Today's anti-COVID rules about keeping a six-foot (or more!) separation and using face masks are like the regulated safe distances and barricades between explosives: precautions now can stop a chain reaction later.