Through thick and thin, Aspen Mountain snowmaking crew plays key role getting ski area open
The past two ski seasons started as polar opposites in Aspen, but any way you slice it, the snowmaking crew play a key role in getting skiers and riders on their boards.
In 2017-18, the season started with one ribbon of man-made snow top-to-bottom on Aspen Mountain because of a drought.
This season, the snowmaking crew complemented Mother Nature to help get the ski area open five days early.
“Last year was the hardest year ever,” said Devin Pool, an Aspen Mountain snowmaker for the past 10 years. “This year is the easiest year ever.”
This season, cold temperatures allowed Aspen Skiing Co. to meet its perennial goal of firing up the snowmaking guns on Halloween night. Temperatures have stayed cold and mounds of snow were made for the snowcat groomers to spread out.
“Our target (at Aspen Mountain) is to use 58 million gallons of water,” Pool said during a tour of Aspen Mountain as dawn broke Nov. 28. “Right now we’re at 52 million. It’s the end of November and we’re a month ahead of where we were last year.”
Last season was one most skiers, riders and Skico employees would just as soon forget. An unusually warm fall didn’t allow snowmakers to even think of flipping the switches on their machines until two weeks later than desired.
Gordon Turner, a controller with the Aspen Mountain snowmaking crew, said they had to dream up tasks at the start of last season to keep workers busy. The floor at the snowmaking headquarters building on Aspen Mountain, for example, was the cleanest ever from multiple nights of mopping.
“It was frustrating,” Turner said. “People would say, ‘I didn’t come here to mop.’”
They were finally able to start making snow Nov. 14, two weeks beyond the target date.
“There was no snow,” Pool said. “We couldn’t snowmobile anywhere. We couldn’t run guns anywhere. We were moving the guns by hand to make a strip to ski down by Thanksgiving last year.”
Katie Ertl, Skico’s senior vice president of mountain operations, credited the Aspen Mountain snowmaking crew for being both experienced and willing to try new technologies. Their knowledge and ability to make snow efficiently during short windows allowed Aspen Mountain to open on time last season.
“When we only had 10 hours of cold temperatures, they were able to start up and shut down quickly, allowing for maximum snowmaking in short time frames,” Ertl said.
“This year, colder temperatures in November allowed the team to work through 24-hour periods, and sometimes longer, to get the mountain ready.”
Aspen Mountain has 22 snowmakers and a manager divided between the swing shift from noon to midnight and the grave shift from midnight to noon. Their goal is to make as much snow as quickly and efficiently as possible starting on Halloween.
They oversee an infrastructure of pumping stations, compressors, reservoirs, hydrants and snow guns spread out across the lower two thirds of the mountain. The water is purchased from the city of Aspen.
There are a “few hundred” hydrants alongside the slopes, Pool said. Roughly 50 guns can be utilized at any one time to use compressed air to blow water out into the atmosphere
“We have a list of priorities because we can only do so much at a time with our resources,” Pool said. “We pump 2,000 gallons per minute, so we can only do so many guns at one time. We can’t light up the whole mountain at one time.”
There is a great deal of collaboration between the snowmaking crew and groomers. A gun will run until it creates enough snow so that the groomers can cover an area well enough. Once the drivers are satisfied, they will alert the snowmaking supervisors and the crew will move the guns to different hydrants.
Turner and other controllers play a key role orchestrating the crews’ movements and overseeing the snowmaking infrastructure from a high-tech headquarters. Turner’s office features a bank of computer screens that allow him to track activity, control the pumps and run the automated snow guns. Turner uses a radio to delegate tasks to the snowmakers in the field, who typically team up in pairs. The Aspen Mountain snowmaking crew had included women in the past but it’s currently all men.
Turner can monitor the location of snowmakers via GPS units on their snowmobiles — a change the company made after a snowmaker suffered an injury on his sled and died at Snowmass in 2008.
While snowmakers are scheduled four shifts of 12 hours per week, many crewmembers work extra days. As a member of the grave shift, Pool said he finds it easier to work extra days and stay on a regular schedule.
“I just finished working 25 nights in a row, 84 hours a week,” he said Saturday.
The snowmaking priority is different on seasons that don’t start with World Cup ski racing. In those seasons, the first priority is the racecourses. Without racing, the priority is to establish top-to-bottom coverage as soon as possible. Little Nell gets covered at the base and then crews work uphill.
“Guns will work their way to Copper. Once we’re done with Copper we’ll go to Ruthie’s, and once we’re done with Ruthie’s they’ll go to 1A,” Pool said. “We’ll move in a certain order. We need top-to-bottom skiing first. After that, we’ll go wherever needed.”
The Aspen Mountain crew came within a whisker of finishing in November, which would have been a first in the modern snowmaking era. The last three nights of November were too warm for snowmaking so the work is stretching into December.
Currently, the snowmaking system extends up to Deer Park, about two-thirds up the mountain. The U.S. Forest Service approved Skico’s application Nov. 28 to expand the snowmaking to an additional 53 acres at the mountaintop. Skico’s goal is to add coverage on the One and Two Leaf and Silver Bell trails for next season to ensure coverage to the top. Additional terrain will be added the following season.
The system gets more efficient every year. While Skico buys many of the snowmaking guns it also leases them from manufacturers so it can keep pace with innovations. Automated infrastructure and guns were placed along Little Nell two summers ago and eight more were added farther up the mountain in Spar Gulch and Deer Park this summer.
Sensors in the guns detect the temperature and automatically turn on the water when conditions are right. They adjust water levels as the temperature changes, something the snowmaking crew must do by hand with other guns.
“Back when I started it was all manual, high-intensity labor,” said Jay Clapper, an Aspen native who has worked with the Aspen Mountain snowmaking crew for 30 years. “Efficiency is so much better now than it was back in ’89.”
Skico runs a fleet of fan, stick and sled guns. The fan guns are true to their name. They look like a large fan but in this case they are capable of blowing out snow to great distances at 65 mph, according to Clapper. The stick or tower guns look like a water pipe with a nozzle at the end protruding 15 feet into the air. They place snow more precisely.
Pump houses are strategically placed around the mountain to move water uphill to the hydrants and boost the flow rate to the high level necessary for snowmaking.
Automation changes what snowmakers do, but it hasn’t reduced the need for workers. The automated parts of the system require a sophisticated electronics network that gets affected by loose or broken wiring. Snowmakers spend a lot of time troubleshooting.
There is still manual equipment in Copper, all of Ruthie’s and all the Lift 1A side. Crewmembers regularly need to adjust water levels by hand as temperatures change.
Snowmakers use a “wet bulb” reading that factors in air temperature and humidity to determine when to make snow.
“Twenty-six degrees wet bulb is what we normally consider fire-up temperature, 24 if we’re trying to be conservative on how wet the snow may be,” Pool said. “We don’t want to make ice, so 24 is the safer cutoff.”
Colder temperatures are ideal because a higher amount of gallons of water per hour can be used.
“We can get the water out of the hill in less amount of time and using less energy,” Pool said. “The faster we get it done, the less energy we use, the less money we spend, the less carbon impact we have as a company because this is the No. 1 energy user in the ski operations.”
Like with the high-tech equipment, a lot of time is required for troubleshooting with the manual equipment.
“We’re looking for problems,” Pool said. “It’s a lot of detective work. If there are clogged nozzles in a gun it can make an icy spot. We’re looking to make quality product at every single location.”
The job seems to get into the blood of many of the crew. The Aspen Mountain snowmaking crew has several veterans of between 10 and 20 years, along with Clapper at 30 years.
“The turnover isn’t a whole lot,” Clapper said. “Once they decided to do it, they stay.”
Once snowmaking wraps up sometime in December, many workers transfer to different roles within Skico. Clapper teaches skiing at Snowmass. Pool is a lift supervisor at Aspen Highlands. Turner remains with the snowmaking department year round. After the bulk of the winter work is completed, he will operate a few guns that keep snow on Little Nell and prevent it from becoming a sheet of ice. During the summer, he said, “I start fixing everything that’s broken.”
For Clapper, the job has retained its appeal for so long because of “the fun, the exercise, just to be outside. It’s something different every day.”
The snowmakers have dazzling view of the nightlights of Aspen while they whiz around the mountain on snowmobiles. They often see fox, bear, deer and other wildlife roaming the slopes.
For Pool, the biggest appeal of the job is achieving the goal of providing enough coverage for skiing.
“If we accomplish it, the whole town is stoked,” he said. “If we open a week early, everyone knows you did your job. It’s not like a job where there’s no appreciation. The whole town knows whenever we do our job well.”
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