The bath is housed and circulated within the superstructure: a 
cylindrical Dewar of depleted uranium with magnetic drives 
("magdrives") for accelerating and braking the gyro, a separate 
insulated reservoir, plumbing, instrumentation, and controls to 
provide circulation of 2.5 ML of total coolant. Authorized personnel 
may refer to document ECU-6852S, volumes 2-4 for complete 
schematics. 


+ Theory of operation 


The hyperreflective surface of the innermost shell 
suppresses incident radiation across a wide frequency 
range via interference. 


Previous research demonstrates that quantum defects 
throughout the graphene lattices within the core occur 
naturally and self-repair spontaneously within the 
gyroscope's magnetic field. Calculations suggest the 
graphene shells can be treated as a composite material 
in a metastable state with a mean of 10° + 103 defects at 
its current temperature and pressure. At 70 K, 
comparable graphene samples were strong enough to 
contain sustained pressure of 18 MPa, and impulses of 
4.2 GPa-msec. As the temperature is reduced, the 
strength increases exponentially. 


During the design phase, the containment unit was 
projected to consume 13.75 kW to maintain systems in a 
standby state between breach attempts by any SCP 
within. When active, the bulk of the energy expended by 
an attempt to breach containment from within will be 
subsumed by the vacuum uncertainty resulting from the 
tremendous London moment of the superconducting 
field. The remaining fraction will be converted to heat in 
the helium bath. For an arbitrary impulse of energy, this 
conversion occurs on the order of 100 picoseconds. The 
resilience of the containment device is limited only by the 
attainable flow rate, which is maintained automatically, 
and the size of the coolant reservoir. So long as the 
helium remains in the superfluid state, maximum flow 
rate is far superior to that of other cryogenic coolants. 


The prototype is rated up to 100 kW of power 
consumption, and has ten times the coolant necessary 
for operation at maximum power. In a worst-case 
scenario, using all the coolant and power resources 
reasonably available to the Foundation, the device is 
theoretically capable of containing plasma on the order 
of fTp4, and physical forces approaching 50% of the 
Chandrasekhar inversion limit. 


As a baseline, based on metrics taken from its current 
containment procedures and history of breaches, 
indefinite containment of an entity comparable to 
SCP-076 would require about 17 kW at most. 


As the device was designed as a proof-of-concept 
prototype, no particular attention was paid to how an 
SCP would actually be placed into the core; it was 
assumed this could be engineered into a later version of 
the device. 


Description: SCP-1718 is an energetic anomaly that arose during a 
project managed by the ECRGS® to explore the limits of containment 
science. 


+ Project Timeline 


From January to October 2009, ECRG conducted 
computational simulation, sample fabrication, and 
prototyped elements of the device. 


Date Event 

December 2, 2009 ECRG submits proposal 
6852, "An 
Containment System" to the 
O5 Research 
Subcommittee; Drs. 
Andrews and Hedley, 
principal investigators. 

February 23, 2010 Proposal 6852 is approved 
and funded. 

March 15, 2010 Construction of the core 


May 2010 


November 7, 2010 


February 2, 2011 


August 5, 2011 


September 1, 2011 


October 31, 2011 


January 2, 2012 


February 6, 2012 


begins in Bay 22 at Site-06. 
Project timeline is 
accelerated by three months 
when ionic sonication 
techniques for the 
deposition of graphene are 
mastered ahead of 
schedule, allowing for the 
addition of a new layer 
every four hours. 

The gyroscope is 
assembled at 111 K. It is 
cooled to 77 K over the next 
33 days. 

Construction is halted for 
three weeks due to an 
industrial accident while 
casting the DU Dewar. Four 
staff are killed, including Dr. 
Hediey. 

The superstructure is 
complete. The gyro is 
assembled into the Dewar, 
using liquid nitrogen at 76 K 
as the initial coolant. 
Coolant temperature 65 K. 
Hydrodynamic rotation of 
the gyroscope initiated at 
0.3 rpm. 

Coolant at 9.3 K, rotation 52 
rpm. Niobium makes 
superconducting transition, 
and the core becomes 
impervious to most Sensors. 
Coolant at 8 K, rotation 72 
rpm. The magdrives are first 
engaged to assist 
hydrodynamic acceleration 
of the gyro. 

Coolant at 7 K, rotation 104 


rpm. A significant seismic 
event in the vicinity of Site 
12 causes the rupture of a 
separate system 
condensing helium-4 for 
future use. One assistant 
researcher is killed, two staff 
are seriously injured. The 
gyro is stable throughout the 
event and its aftershocks. 

May 17, 2012 Core rotation 112 rpm. 
Temperature stabilized at 
5.2K while staff initiate the 
replacement of nitrogen 
coolant with “He. 


October 18, 2012 4He at sufficient purity to 
resume cooling. 175rpm. 
January 3, 2013 4He reaches 2.17 K, and 


transitions to a frictionless 
superfluid state. As 
predicted, hydrodynamic 
acceleration no longer 
functions. 


Once the bath became superfluid, the magdrives were used to 
accelerate the gyro over twenty-four hours to the target 150,000 
rpm. The process completed 57 minutes earlier than predicted, but 
otherwise without incident. The coolant temperature was further 
reduced to 1.6 K to provide a safety margin. At this rate of rotation, 
relativistic effects cause a special case of the dynamical Casimir 
effect to arise between the opposing points of the niobium shell, 
bombarding the core with [DATA REDACTED] per design, 
completing the containment protocol. Instrumentation evidenced 
power, temperature, and gyroscopic stability at least two orders of 
magnitude better than its design tolerance, near or beyond the 
sensitivity of most of the instrumentation. 


On February 1, in the wake of an unrelated cognitohazard event, Dr. 
Andrews was administered a Class B amnestic to save his life. He 
necessarily lost about five years of memories, including all 


knowledge of project 6852. Though quickly re-immersed in the 
project documentation and retrained by his former subordinates, he 
recovered no particular proficiency for the science and engineering 
techniques he previously pioneered, and expressed profound 
disbelief of the plausibility of several Key components of the design 
of the containment system. 


In the original project plan, the ECU was scheduled to burn-in for 90 
days. In light of the fact that the research team had effectively lost 
both of its principal investigators, the containment tests were 
deemed successful, and deactivation of the device was initiated 
early (on February 8th) after thirty-five days of nominal operation. 
The plan called for a five day magdrive spin down at constant 
temperature, to 0.3 rpm at 1.6 K, followed by a four month warm up 
to 77 K, whereupon the core would be dismantled and inspected for 
stress and spallation defects. 


Seven hours after the magdrives were reversed, no significant 
slowing of the gyro could be detected. A diagnostic test of the 
SQUIDs that monitored rotation revealed a calibration drift had 
occurred, and suggested that the gyro was likely spinning far faster 
than expected. 


In his first insight since amnestic treatment, Dr. Andrews theorized 
that the Coriolis effect, neglected in the original design analysis, had 
been freely accelerating the frictionless gyro for over a month. 
However, there was significant disagreement between the research 
assistants as to whether or not this was a sound application of basic 
physics. If true, points along the surface of the gyro were calculated 
to have a speed approaching 0.1c. At the direction of the O5 
Research Subcommittee, the strength of the magdrives were 
eventually increased a hundredfold in an attempt to slow rotation. 
After fifty-five hours of continuous braking, the recalibrated SQUIDs 
were able to detect the rotation speed slowing through 352,000 rpm. 


Seventeen hours later, as the rotation speed slowed to 153,000 rpm 
(close to the original design speed), an unexpected and unexplained 
flow of heat into the 4He bath was detected. Automated systems 
compensated as intended, increasing total power draw (neglecting 
the magnetic drives) from 13.74 kW to 14.15 kW, and preventing 
any rise in temperature. The strength of the magdrives was 


immediately reduced to originally planned levels. Over the course of 
the next hour, as the magnetic drives slowed the gyroscope to 
152,000 rpm, slightly above the original target rate, power draw 
climbed to 14.89 kW. Though small, the 1.15 kW difference in draw 
power theoretically corresponds to a sustained explosive force of 
over a kiloton of TNT within the core. 


In an abundance of caution, the magdrives were adjusted to hold the 
rotation rate steady at 152,000 rpm, in order to allow further study 
without risking breach. Since then, the power necessary for 
stabilization has continued to climb, at about 500 W per day. 


If the design theory is correct, the current level of power draw 
implies forces or temperatures within the core equivalent to 0.7 
megatons of continuous explosive force. 


Addendum A: 


ECRG proposal 6987, "A 1/10th Scale Research Model of 
ECU-6852" is attached. Drs. Andrews and Smenk, principal 
investigators. 


Addendum B: 


Proposal 6987 is hereby rejected. Regarding the 
prototype, the Foundation will do what it's best at: 
ECU-6852 is hereby designated SCP-1718. Let's move 
on, gentlemen. 


- O5 Research Subcommittee 


Footnotes 

1. gloss units 

2. clockwise as viewed from above 

3. below 2.17K 

4. 10-15times the Planck temperature, or about 1017K 
5. the Experimental Containment Research Group 


« SCP-1717 | SCP-1718 | SCP-1719 » 


SCP-1719: The Harrison-Grey Effect 


Item #: SCP-1719 
Object Class: Euclid 


Special Containment Procedures: Examples of SCP-1719 may be 
stored under the standard security protocols for Safe objects. 
SCP-1719 has been tested extensively and exposure to it is 
considered physically harmless. 


SCP-1719-1 specimens among the general population are not 
currently to be contacted, contained or terminated, pending further 
research into the cause and nature of the anomaly. 


Site-57 has been designated the central location for SCP-1719 
research. All current and incoming Foundation personnel are to be 
tested using SCP-1719, under the guise of standard medical 
screening. Examples of SCP-1719-1 found among D-Class 
personnel are to be designated exclusively for use in experiments 
on SCP-1719. Non-D-Class Foundation personnel found to be 
SCP-1719-1 specimens will be quarantined indefinitely via 
reassignment to limited duty at Site-57. The nature of SCP-1719-1 
anomalies is not to be disclosed to any Foundation personnel, other 
than: 


« Researchers of SCP-1719 
* The 05 Committee 
¢ The Foundation Ethics Committee 


Knowledge suppression among the general population is the current 
major containment issue for SCP-1719. To minimize unauthorized 
knowledge of SCP-1719: 


¢ The patent for SCP-1719 has been purchased by a 
Foundation front (Spectacular Cinematic Productions) and 
publicly accessible versions replaced with a non-anomalous 


variant. 

¢ The inventors of SCP-1719 have been interrogated and 
administered Class Omega amnestics. 

* Class 1 monitoring of worldwide communications data for 
mention of SCP-1719, its effects, and means of production will 
continue indefinitely. 


Unauthorized knowledge of SCP-1719 is to be responded to with 
deletion/alteration of data, disinformation campaigns, and 
administration of amnestics when feasible. 


The Foundation estimates that public knowledge of SCP-1719 has 
declined by 92% since these procedures were implemented in 2006. 
The primary distributor of SCP-1719, The First Visionary Church of 
the Revelation, is considered neutralized. Rumors of organized 
groups of SCP-1719-1 specimens are currently unsubstantiated. 


Description: SCP-1719 is an optical device commonly known (after 
its inventors) as a Harrison-Grey lens. When viewed through 
SCP-1719, a significant number of humans (designated 
SCP-1719-1) exhibit an anomalous appearance (the Harrison-Grey 
effect), displaying a variety of non-human features. SCP-1719-1 
specimens appear to be a heterogeneous combination of three or 
more species, including annelid, cetacean, procyonid, cnidarian, and 
cervine, arranged in a generally humanoid form. Many exhibit 
additional features unknown among terrestrial life. 


The Foundation has conducted extensive research into the nature of 
the Harrison-Grey effect and the presence, distribution, and 
activities of SCP-1719-1 among the general public. 


Summary of Research on SCP-1719 and the Harrison-Grey 
effect 


¢ Approximately 11.4% of the human population exhibits the 
Harrison-Grey effect i.e. is an example of SCP-1719-1. 


¢ Affected individuals exhibit the anomaly from birth, and it does 
not appear to be contagious. The prevailing theory is that the 
effect is due to an unidentified recessive genetic trait. 


¢ There is no apparent correlation between SCP-1719-1 
specimens and SCP-1237-1-positive individuals. 


Examples of SCP-1719-1 maintain consistent appearance to 
those who can perceive the anomaly. 


* SCP-1719-1 specimens do not perceive the anomalous effect 
of SCP-1719, and consistently claim that they are not 
anomalous in any way. Non-researchers aware of the claimed 
effect (primarily D-Class, and individuals harassed by The 
First Visionary Church of the Revelation) insist it is some form 
of hoax, illusion, prejudice, or insanity on the part of those who 
perceive it. 


* The effect is evenly distributed worldwide, with the notable 
exception of the population of , which is approximately 
92% SCP-1719-1. To achieve such widespread distribution by 
non-anomalous means, the effect would need to have been 
present in the human population for over years. 


The effect does not appear to correspond to race, sex, or any 
obvious genetic trait (hair/eye/skin color, blood type, etc.). 


The effect does not correspond to any identifiable socio- 
economic or cultural factors. There is no explicit evidence that 
SCP-1719-1 specimens are congregating unusually, 
collectively engaging in suspicious activities, or in any way 
perceive each other as different from the general population. 


Approximately 45% of humanoid subjects held by the 
Foundation exhibiting other anomalies are, in addition, 
SCP-1719-1 specimens. For a complete list, see Document 
SCP-1719-B17. The significance of this is unknown, and no 
changes to current containment procedures should be made. 


¢ SCP-1972-A appears to be a normal human when viewed 
through SCP-1719. The significance of this is, again, unclear. 


It is currently unknown if the Harrison-Grey effect is a harmless 
optical anomaly, or has identified a significant threat among the 
general population. Due to the non-zero likelihood of an XK-Class 


event, determination of this is a Class 1 research priority. In the 
event that the presence of SCP-1719-1 within the general population 
becomes a confirmed threat, the Foundation Ethics Committee has 
approved reclassifying SCP-1719 as Keter, and implementing 
Procedure Z-1719-T as a joint Foundation/Global Occult Coalition 
operation. 


Addendum 1: Recovered material from The First Visionary Church 
of the Revelation: 


We are the ones who See the truth: The Demons of old 
are not in Hell, but walk among us at this very moment! 
They do not rule yet, but have infiltrated our society from 
top to bottom. They pretend not to know their own 
nature, but they are the supreme Liars. When their 
Masters return, the Great Conspiracy shall be known, 
and we will be their cattle. 

Be tested! Know that you are not one of them and join 
Us.