• Prevent hazards while on the job.RUNSTUDIO/Photodisc/Getty Images
  
  Safety must always be the No. 1 priority when working with core drills. There are a multitude of injuries that can occur if the proper precautions aren't taken. Even though drilling for diamonds can be an exciting idea, not wearing protective equipment can change your life for the worst. Treat core drills with respect while handling them. Even if there's a group of precious stones that you're drilling for, it's not worth your well-being.
  
  

Noise

• Core drilling is a very loud procedure and can damage your hearing, especially after long periods of time. If your ears start to ring or the noise hurts your ears, these are sure signs you need protection. You can use earplugs, which are small inserts, or earmuffs, which look like headphones and cover both ears.
  
  

Flying Particles

• Many particles fly in the air while core drilling. This can cause risk to your eyes especially. Therefore, wear a face shield and safety glasses while operating the drill.
  
  

Falling Cores

• Cores may fall while drilling. To prevent injuries, cordon off the area where you're working to warn others that danger is present. Also use a a catch container. This sloped container is attached to the work surface and catches any fallen debris. The debris hits the slope and funnels into a receptacle without any unwanted spillage.
  
  

Dust in Air

• Take respiratory precautions while core drilling. Regular dust masks won't suffice. If possible, use an air-purifying respiratory mask. Work sites should have forced-air and exhaust ventilation systems.
  
  

Fallen Debris

• Falling debris can cause serious head injuries and brain damage. To prevent such a life-changing injury, wear a hard hat. Don't wear the hard hat loosely. Instead, it must fit snugly. Adjust the strap so the hard hat won't easily fall off of your head.