The Missouri Department of Natural Resources describes a Pulp and Paper Mill business as:

A pulp mill is a manufacturing facility that converts wood chips or other plant fibers sources into a thick fiber board which can be shipped to a paper mill for further processing. A paper mill is a factor devoted to making paper.

You may need some or all of the following permits for a Pulp and Paper Mill business:

Hazardous Waste/ Infectious Waste Transporter License https://dnr.mo.gov/waste-recycling/business-industry/permits-licenses-registrations/hazardous-waste-infectious-waste-transporter

Waste and Recycling

If you or your business plans to transport used oil, hazardous waste (combustible liquids, corrosives, poisons/ toxins, flammable liquids, flammable solids, PCB's) or infectious waste in Missouri, you are required to obtain a Hazardous Waste Transporter License.

Even though the request is approved by both Missouri Department of Transportation (MoDOT) and the Missouri Department of Natural Resources, you must apply for and renew the license through MoDOT. For more information, please visit MoDOT's Hazardous Waste Transport webpage.
Major Water User Registration https://dnr.mo.gov/water/business-industry-other-entities/reporting/major-water-users/registration

Water

If you or your business is capable of producing 100,000 gallons per day, or approximately 70 gallons per minute, including all wells or surface intakes, you are required to register with the department as a Major Water User. This registration is not for permitting purposes or to regulate water usage. Major water users are required by law to report the volume of water they used by March 31 of the year following the usage. Registration is required in order to submit reports.

The Major Water Users Program is established to simply gather water use data. Missouri collects water use data to better understand and manage the state’s water inventory. For more information, or to complete the online registration, please visit the Major Water Users webpage.
Open Burning Notification https://dnr.mo.gov/air/open-burning-notification

Air

Open burning is the burning of any materials in which air contaminants are emitted directly into the air without first passing through a stack or chimney. The Missouri Department of Natural Resources does not issue permits for open burning. Prior to conducting any open burning, businesses and citizens should contact the city or county of jurisdiction for any local restrictions.

The department's Facts on Open Burning Under Missouri Regulations - PUB2047 fact sheet summarizes allowable and prohibited open burning under Missouri regulations. It does not include open burning restrictions that city or county governments may impose in addition to Missouri’s state regulations. 
Solid Waste Technician Certification https://dnr.mo.gov/waste-recycling/solid-waste-technician-certification

Waste and Recycling

Missouri solid waste disposal areas and solid waste processing facilities designated by rule, must be operated under the direction of a certified solid waste technician. For more information, please visit the department's Solid Waste Technician Certification webpage.